Mad for these hatters: The best in celeb headgear

LONDON, ENGLAND - DECEMBER 08: (UK TABLOID NEWSPAPERS OUT) Sarah Jessica Parker attends the gala premiere afterparty of Did You Hear About The Morgans? held at Aqua on December 8, 2009 in London, England. (Photo by Dave Hogan/Getty Images)

WASHINGTON - JANUARY 20: Aretha Franklin sings during the inauguration of Barack Obama as the 44th President of the United States of America on the West Front of the Capitol January 20, 2009 in Washington, DC. Obama becomes the first African-American to be elected to the office of President in the history of the United States. (Photo by Mark Wilson/Getty Images)

A picture dated 1937 of US actor and dancer Fred Astaire with a top hat. AFP PHOTO // FRANCE PRESSE VOIR (Photo credit should read -/AFP/Getty Images)

ANAHEIM, CA - JUNE 24: Actor Johnny Depp arrives at the world premiere of \"Pirates of the Caribbean 2: Dead Man's Chest\" held at Disneyland on June 24, 2006 in Anaheim, California. (Photo by Kevin Winter/Getty Images)

Princess Diana (1961 - 1997) on a visit to the Queen's and Royal Hampshire Regiment at Howe Barracks, Canterbury, Kent, May 1995. She is wearing a hat by Philip Somerville. (Photo by Jayne Fincher/Getty Images)

CANNES, FRANCE - MAY 21: US actress Cameron Diaz promotes Gangs of New York at the Majestic Hotel in Cannes, France on May 21, 2002. Diaz was cast as Jenny Everdeane in the film. (Photo by Dave Hogan/Getty Images)

German-born actress Marlene Dietrich (1901 - 1992), who left Berlin to star in American films. (Photo by Fox Photos/Getty Images)

LAS VEGAS, NV - SEPTEMBER 24: Musician Lady Gaga performs onstage at the iHeartRadio Music Festival held at the MGM Grand Garden Arena on September 24, 2011 in Las Vegas, Nevada. (Photo by Christopher Polk/Getty Images for Clear Channel)

MIAMI - AUGUST 29: (U.K. TABS OUT) Singer Jennifer Lopez arrives at the 2004 MTV Video Music Awards at the American Airlines Arena August 29, 2004 in Miami, Florida. (Photo by Dave Hogan/Getty Images)

381091 71: President John F. Kennedy and First Lady Jacqueline Kennedy ride in a parade March 27, 1963 in Washington, DC. (Photo by National Archive/Newsmakers)

LOS ANGELES, CA - NOVEMBER 17: Musician Kid Rock arrives at the GQ 2010 \"Men of the Year\" held at Chateau Marmont on November 17, 2010 in Los Angeles, California. (Photo by Frazer Harrison/Getty Images)

LOS ANGELES, CA - MARCH 02: Host/rapper/actor LL Cool J arrives at the 38th annual NAACP Image Awards held at the Shrine Auditorium on March 2, 2007 in Los Angeles, California. (Photo by Frederick M. Brown/Getty Images)

TO GO WITH AFP STOR BY FELIX MPONDA (FILES) This file picture dated April, 19 2007 shows billionaire pop star Madonna posing with her Malawian son David Banda in Mphandula. AFP PHOTO / STRINGER (Photo credit should read STRINGER/AFP/Getty Images)

OTTAWA, ON - JULY 1: Catherine, Duchess of Cambridge attends Canada Day Celebrations at Parliament Hill on day 2 of the Royal Couple's North American Tour on July 1, 2011 in Ottawa, Canada. (Photo by Mark Large - Pool/Getty Images)

LAS VEGAS - OCTOBER 15: Singer/songwriter Ne-Yo arrives to celebrate his birthday at the Tryst nightclub early October 15, 2010 in Las Vegas, Nevada. Ne-Yo's turns 28 on October 18. (Photo by David Becker/Getty Images for Tryst Nightclub)

US actor Brad Pitt poses during a photocall of the movie \"Burn After Reading\" directed by Ethan and Joel Coen during the 65th Venice International Film Festival at Venice Lido, on August 27, 2008. \"Burn After Reading\" is presented out of competition. AFP PHOTO / ALBERTO PIZZOLI (Photo credit should read ALBERTO PIZZOLI/AFP/Getty Images)

HOLLYWOOD - APRIL 26: Actor Samuel L. Jackson arrives at the world premiere of Paramount Pictures and Marvel Entertainment's \"Iron Man 2? held at El Capitan Theatre on April 26, 2010 in Hollywood, California. (Photo by Kevin Winter/Getty Images)

HOLLYWOOD, CA - FEBRUARY 27: Musician Carlos Santana arrives at the 77th Annual Academy Awards at the Kodak Theater on February 27, 2005 in Hollywood, California. (Photo by Carlo Allegri/Getty Images)

American singer and actor Frank Sinatra (1915 - 1998) smiles while holding a cigarette and a cup of coffee in a recording studio, 1950s. (Photo by Hulton Archive/Getty Images)

UNIVERSAL CITY, CA - AUGUST 14: Singer Gwen Stefani accepting the Choice Music Female Breakout award onstage at the 2005 Teen Choice Awards held at Gibson Amphitheatre at Universal CityWalk on August 14, 2005 in Universal City, California. (Photo by Kevin Winter/Getty Images)

LONDON, ENGLAND - APRIL 29: David Beckham and Victoria Beckham arrive to attend the Royal Wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011 in London, England. The marriage of the second in line to the British throne is to be led by the Archbishop of Canterbury and will be attended by 1900 guests, including foreign Royal family members and heads of state. Thousands of well-wishers from around the world have also flocked to London to witness the spectacle and pageantry of the Royal Wedding. (Photo by Dan Kitwood/Getty Images)