Happy anniversary, Will and Kate! Your 10 cutest marriage moments

LONDON, ENGLAND - APRIL 29:  Their Royal Highnesses Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge kiss on the balcony at Bucki... Peter Macdiarmid / Getty Images
Time flies when you're having fun! Prince William and the former Kate Middleton celebrate their third wedding anniversary on Tuesday. Here, they kiss on the balcony at Buckingham Palace on April 29, 2011.

In the three years since Prince William and Duchess Kate became husband and wife in front of millions of adoring fans, they've only become bigger world superstars. 

Add in their adorable baby, Prince George, and the trio are unstoppable.

On Tuesday, the Duke and Duchess of Cambridge celebrate their third wedding anniversary. Becoming first-time parents last summer hasn’t stopped the sweet moments between these college sweethearts, who just returned from a whirlwind tour Down Under, their first trip abroad as a family.

Here are some of the sweetest moments from William and Kate, the couple the world just can’t seem to get enough of. 

Connecting in Canada: Just a few months after their wedding, the newlyweds left for Canada on their first overseas trip together. Their journey took them everywhere from Prince Edward Island to the Northwest Territories. On July 8, 2011, the lovebirds donned matching white Stetsons while attending the Calgary Stampede parade.

CALGARY, AB - JULY 08:  Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge wave as they attend the Calgary Stampede on July 8, 2011... Chris Jackson / Getty Images

Olympic-sized hug: Kate and William celebrated a victory by Team Great Britain with a rare public display of affection during 2012 Summer Olympic Games in London. The couple hugged each other after watching their home country pick up the gold in the Track Cycling event.

(FILE PHOTO) St James's Palace has announced that Prince William and Catherine Duchess Of Cambridge are expecting a baby LONDON, ENGLAND - AUGUST 02: ... Pascal Le Segretain / Getty Images

Shaking their groove thing: The royal couple demonstrated their dancing prowess while on the Pacific island of Tuvalu during a September 2012 Diamond Jubilee tour they took on behalf of Queen Elizabeth. Their visit also included stops in Singapore, Malaysia and the Solomon Islands.

TUVALU - SEPTEMBER 18: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge dance with the ladies at the Vaiku Falekaupule for an ent... Pool / Getty Images

We're expecting! After spending several days in a London hospital for treatment of an extreme form of morning sickness (Hyperemesis Gravidarium), a newly pregnant Duchess Kate checks out and heads home with Prince William on Dec. 6, 2012. 

LONDON, UNITED KINGDOM - DECEMBER 06: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince William, Duke of C... Indigo / Getty Images Contributor

Expelliarmus! The adorable couple got into character during an April 26, 2013 tour of London's Warner Bros. studio, where they were joined on the "Harry Potter" film set by fellow muggle Prince Harry. Kate showed off her burgeoning baby bump; she and Prince William also enjoyed themselves while squaring off in a magic duel.

LONDON, ENGLAND - APRIL 26:  Prince Harry, Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge raise their wands on the set used to ... Chris Jackson / Getty Images

Baby makes three: The new parents appear in public with Prince George the day after he was born, July 22, 2013. The couple gave everyone their first peek at the baby outside St. Mary's hospital in London. 

epa03798623 Britain's Prince William, Duke of Cambridge, (R) and his wife Catherine, Duchess of Cambridge, (L) depart with their newborn baby boy St. ... Rick Findler / EPA

Proud parents: Prince William and Duchess Kate got to show off their pride and joy, for the first time since his birth, at his Oct. 23, 2013 christening at St. James Palace. The occasion marked the first time the world got to see the now-famous set of chubby cheeks belonging to Prince George. The family posed later that day for their first set of formal family portraits with celebrity photographer Jason Bell. 

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Britain's Prince William, Duke of Cambridge and his wife Catherine, Duchess of Cambridge, arrive with their son Prince George of Cambridge at... John Stillwell / AFP - Getty Images

Family portrait: The duke and duchess provided the public with a long-awaited glimpse of Prince George when they released an official family photo on March 29, 2014. The portrait, which also included the family dog, Lupo, was the first time the baby had been seen since his christening five months earlier. The photo was taken by the same photographer hired for the baptism ceremony.

LONDON, UNITED KINGDOM - MARCH 18 :  (EDITORIAL USE ONLY) (NO SALES) (NO MERCHANDISING OR COMMERCIAL USAGE) (The image must not be cropped, manipulate... Hanout / Getty Images

Down Under: Duchess Kate and Prince William brought Prince George with them on a three-week tour of New Zealand and Australia earlier this month. The trip gave an eager public ample chances to see the royal couple as hands-on parents, but it also gave the young pair plenty of alone time. 

Britain's Prince William (C) and his wife Catherine (L), carrying baby Prince George arrive, at the international airport in Wellington on April 7, 20... MARK TANTRUM / AFP - Getty Images

Picture perfect: Photos captured the couple taking a romantic stroll in front of the iconic Ayers Rock, where they posed at the same spot as William's parents 31 years earlier during a similar tour by Prince Charles and Princess Diana. The duke and duchess also engaged in some playful competition during a pair of yacht races and spent time at the local zoo with their son.

AYERS ROCK, AUSTRALIA - MARCH 21:  Prince Charles, The Prince Of Wales And Diana, Princess Of Wales Standing In Front Of Ayers Rock During Their Offic... Getty Images
  • Slideshow Photos

    Matt Dunham / AP POOL

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    Adventures of Prince George

    From the steps of St. Mary's Hospital in London to posing with his little sister Charlotte, take a look at the royal baby's adventures.

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    The life of Prince George -

    Prince George, the adorable son of Prince William and Duchess Kate, continues to mesmerize the world. Take a look at the royal baby's cutest moments

    Prince William, Duke of Cambridge and his son Prince George of Cambridge pose for a photo after the christening of Princess Charlotte of Cambridge at the Sandringham Estate on July 5, 2015 in King's Lynn, England.

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    Family portrait -

    Catherine, Duchess of Cambridge, Prince William, Duke of Cambridge and their children Princess Charlotte of Cambridge and Prince George of Cambridge pose for a photo after the christening of Princess Charlotte of Cambridge at the Sandringham Estate on July 5, 2015 in King's Lynn, England.

    Mario Testino / Art Partner VIA Getty Images
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    The British royal family -

    Prince William, Duke of Cambridge, Prince George of Cambridge, Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge and and Queen Elizabeth II pose in front of (L-R) Michael Middleton, Pippa Middleton, James Middleton, Carole Middleton, Prince Charles, Prince of Wales, Camilla, Duchess of Cornwall and the Duke of Edinburgh pose for a family photo after the christening of Princess Charlotte of Cambridge at the Sandringham Estate on July 5, 2015 in King's Lynn, England.

    Mario Testino / Art Partner VIA Getty Images
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    Taking a stroll -

    Catherine, Duchess of Cambridge, Prince William, Duke of Cambridge, Princess Charlotte of Cambridge and Prince George of Cambridge arrive at the Church of St Mary Magdalene on the Sandringham Estate for the Christening of Princess Charlotte of Cambridge on July 5, 2015 in King's Lynn, England.

    Chris Jackson / Getty Images
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    Checking out baby sister -

    Britain's Prince George gets up on tiptoes to peek into the pram of Princess Charlotte flanked by his parents Prince William and Kate the Duchess of Cambridge as they leave after Charlotte's Christening at St. Mary Magdalene Church in Sandringham, England, on July 5, 2015.

    Matt Dunham / AP
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    Father and son -

    Prince William, Duke of Cambridge speaks with Prince George of Cambridge as they arrive at the Church of St Mary Magdalene on the Sandringham Estate for the Christening of Princess Charlotte of Cambridge on July 5, 2015 in King's Lynn, England.

    Chris Jackson / Pool via Reuters
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    Prince George of Cambridge -

    Britain's Prince George stands with his parents as they leave after attending the Christening of his sister Princess Charlotte at St. Mary Magdalene Church in Sandringham, England, on July 5, 2015.

    Matt Dunham / AP
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    Great-grandmother chat -

    Britain's Prince George, left, talks with Queen Elizabeth II, as they leave the Church of St Mary Magdalene on the Sandringham Estate, England, after the christening of Princess Charlotte, on July 5, 2015.

    Chris Jackson / AP
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    Get back here! -

    Catherine, Duchess of Cambridge keeps an eye on Prince George of Cambridge during the Gigaset Charity Polo Match at the Beaufort Polo Club on June 14, 2015 in Tetbury, England.

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    What goes up -

    Prince George of Cambridge walks up a hill during the Gigaset Charity Polo Match on June 14, 2015.

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    Must come down -

    Prince George of Cambridge plays on a hill while his father, Prince William, Duke of Cambridge, plays polo.

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    From the sidelines -

    Prince George of Cambridge is held up at a window of Buckingham Palace by his nanny Maria Teresa Turrion Borrallo to watch Trooping the Color on June 13, 2015 in London, England. The ceremony is Queen Elizabeth II's annual birthday parade and dates back to the time of Charles II in the 17th Century, when the Colors of a regiment were used as a rallying point in battle.

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    The royal wave -

    Prince George of Cambridge is held by Prince William, Duke of Cambridge as they look out from the balcony of Buckingham Palace during the Trooping the Color on June 13, 2015 in London, England.

    Chris Jackson / Getty Images
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    Watching the parade -

    Britain's Queen Elizabeth II leads members of the royal family on the balcony of Buckingham Palace following the traditional Trooping the Color ceremony in central London, on June 13, 2015. From left: Prince Charles, Prince George, Prince William, Catherine, Duchess of Cambridge and Prince Harry. The Trooping marks the monarch's official birthday.

    Facundo Arrizabalaga / EPA
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    Big brother -

    Prince William, Duke of Cambridge and Prince George of Cambridge arrive at St. Mary's Hospital in London, after Catherine, Duchess of Cambridge gave birth to a baby girl on May 2, 2015.

    Chris Jackson / Getty Images
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    First photo shoot -

    Prince George and Princess Charlotte pose for a photo.

    Getty Images
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    Kiss from big brother -

    The Duke of Duchess of Cambridge released the official photographs taken by the Duchess of Prince George and one-month-old Princess Charlotte together at their country retreat in Sandringham.

    AFP - Getty Images
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    Royally cute -

    "We're delighted to share the first photo of Prince George with his little sister Princess Charlotte," the family photo was captioned by the Kensington Palace Twitter account.

    pool via Reuters
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    Sweet souvenirs -

    Royal souvenirs of British Prince George, Prince William and Catherine, Duchess of Cambridge, sit on a shelf at a souvenir shop in London, on April 9, 2015. Britain is preparing for the royal couples second child.

    Andy Rain / EPA
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    Christmas greeting -

    Happy Christmas from the Prince! The Duke and Duchess of Cambridge have released three official Christmas photographs of Prince George.

    The Duke And Duchess Of Cambridge / EPA
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    Picture perfect -

    Taken in November, the photographs show the 1-year-old prince in a courtyard at Kensington Palace. They are the first photos of Prince George released since his first birthday in July.

    The Duke And Duchess Of Cambridge / PA Wire via Getty Images
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    That face -

    The prince is seen wearing a collared shirt and a sweater vest designed with soldier guardsmen on the front. Prince George will soon become a big brother. Duchess Kate is expecting a second child in April.

    The Duke And Duchess Of Cambridge / EPA
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    Catherine, Duchess of Cambridge holds Prince George as he points to a butterfly on Prince William's hand as they visit the Sensational Butterflies exhibition at the Natural History Museum on July 2, 2014 in London. The family released the photo ahead of the first birthday of Prince George on July 22.

    WPA Pool via Getty Images
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    Look, Mom, no hands! -

    This photo dated Wednesday July 2, 2014, was taken to mark the first birthday of Prince George and shows the Prince toddling during a visit to the Sensational Butterflies exhibition at the Natural History Museum on July 02, 2014 in London.

    WPA Pool via Getty Images
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    Butterfly effect -

    Duchess Kate holds Prince George as they the Sensational Butterflies exhibition in London with Prince William.

    WPA Pool via Getty Images
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    Horsing around -

    Duchess Kate and Prince George watch Prince William and Prince Harry play in the Jerudong Trophy charity polo match at Cirencester Park Polo Club on June 15, 2014.

    Max Mumby / Getty Images
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    Baby steps -

    Prince George gets a little help from his mom as he practices standing up on his own two feet.

    Zuma Press
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    And he's off -

    Prince George walks alongside his mother while attending the Jerudon Trophy polo match at Cirencester Park Polo Club, where George's dad, Prince William, was playing on June 15, 2014.

    Max Mumby / Getty Images
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    Tiny teeth -

    Prince George, with newly grown in teeth, reacts in Prince William's arms after looking at an Australian animal called a bilby during a visit to Sydney's Taronga Zoo on April 20, 2014.

    David Gray / Reuters
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    Fatherly love -

    Prince William kisses Prince George as they look at an Australian animal called a bilby, which has been named after the young Prince, during a visit to Sydney's Taronga Zoo on April 20, 2014.

    Chris Jackson / Pool via Reuters
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    What a wombat! -

    Duchess Kate holds her son Prince George as his father, Britain's Prince William, holds a toy wombat that was given as a present to him from Australia's Governor-General Peter Cosgrove at Admiralty House in Sydney April 16, 2014.

    Handout / Reuters
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    Hugs for mama -

    Prince George, 8-months-old, shares an adorable moment with his mother, Catherine, the Duchess of Cambridge, during a Plunkett's Parents Group playdate at the Government House in Wellington, New Zealand. The Duke and Duchess of Cambridge are on a three-week tour of Australia and New Zealand, the first official trip overseas with their son, Prince George.

    Woolf Crown Copyright via AFP - Getty Images
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    Meet and greet -

    Prince William looks on as Catherine, Duchess of Cambridge, and Prince George attend a parenting group at the Government House in Wellington, New Zealand. George, wore navy blue shorts with a sailboat on it by designer Rachel Riley.

    Government House NZ via Getty Images
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    Chubby cheeks -

    Britain's Prince George is carried by his mother Catherine, the Duchess of Cambridge.

    Marty Melville / Reuters
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    Making friends -

    Prince George plays with toys alongside other babies while attending a parenting group at the Government House on April 9, 2014 in Wellington, New Zealand.

    James Whitling / Pool via Getty Images
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    Pulling mom's hair -

    The little prince has some fun with his mom's hair during a visit with a parenting group at the Government House in Wellington, New Zealand. The day marked the public’s first chance to see Prince George interacting with other children.

    James Whatling / Pool via Getty Images
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    First official outing -

    Prince William, Duke of Cambridge, Catherine, Duchess of Cambridge and Prince George of Cambridge arrive at Wellington Airport on April 7, 2014 in Wellington, New Zealand.

    Hagen Hopkins / Getty Images
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    Family event -

    Prince William, Duke of Cambridge and his wife Catherine, Duchess of Cambridge, arrive with Prince George of Cambridge at Chapel Royal in St. James's Palace in London on Oct. 23, 2013, ahead of the christening of the 3-month-old prince.

    John Stillwell / AFP - Getty Images
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    Full family -

    Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, sit with their son, Prince George, in the garden of the Middleton family home in Bucklebury, Berkshire, England on Aug. 20, 2013. The family is surrounded by retriever Tilly (a Middleton family pet) and Lupo, the couple's cocker spaniel.

    Michael Middleton / EPA
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    George's debut -

    Prince William and Catherine, Duchess of Cambridge, show their newborn baby boy, Prince George, to the world's media while standing on the steps outside the Lindo Wing of St. Mary's Hospital in London on July 23, 2013.

    Andrew Cowie / AFP - Getty Images
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    Media madness -

    Two days after George's birth, British newspaper front pages show photographs of the royal baby and his parents. George was born on Monday July 22, 2013.

    Peter Macdiarmid / Getty Images

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