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Queen Elizabeth, Prince Philip pose for birthday portrait by Annie Leibovitz

Happy birthday to Queen Elizabeth and Prince Philip!
/ Source: TODAY

Happy birthday to Queen Elizabeth and Prince Philip!

Both members of the royal couple are celebrating their birthdays this weekend: The queen's 90th birthday was in April, though she celebrates publicly in June, while Philip turned 95 Friday. And to mark the occasion, Buckingham Palace released a beautiful portrait of the two on Friday.

Queen Elizabeth II and Prince Philip, Duke of Edinburgh
Portrait photograph released by Buckingham Palace on June 9, 2016 and taken by Annie Leibovitz to mark the Queen's 90th birthday shows Britain's Queen Elizabeth II (L) and Prince Philip, Duke of Edinburgh (R) pictured at Windsor Castle just after Easter in 2016.Annie Leibovitz / AFP - Getty Images

Annie Leibovitz took the photograph in April, the same time that she took a wider series of portraits to commemorate the queen's 90th birthday. The image shows Queen Elizabeth II and her husband, Prince Philip, at Windsor Castle.

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"He has, quite simply, been my strength & stay all these years," Queen Elizabeth said in a message posted to the royal family's social media accounts.

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Married on Nov. 20, 1947, the queen and Prince Philip have been together for 68 years.

Queen Elizabeth II, the longest-ruling U.K. monarch, will have her birthday officially celebrated on Saturday with a public parade called Trooping the Colour featuring 1,400 officers and 400 musicians. There will also be celebrations held throughout the country in her honor.

As the British Monarchy wrote on Facebook: "It's going to be quite a weekend!"