By Leah Ornstein - Radar Style & Beauty Editor
Vanity Fair released a sneak peek of their highly-anticipated annual International Best Dressed List 2011 on Wednesday, which includes Kate Middleton, Michelle Obama, Justin Timberlake and Lady Gaga.
Kate, who fashionably transformed into the Duchess of Cambridge over the last 12 months by trading in her modest and pocket friendly fashions for designer duds, first graced the list back in 2008.
Meanwhile, America's First Lady, who has scored slots on the list for the past four years, appears for the first time with her husband Barack - the two are on the Best-Dressed couples list!
Though Carey Mulligan, Tilda Swinton and Lady Gaga frequently land on fashion critics' worst dressed lists, the trio all made the best dressed list for the second time.
As for the guys, Justin Timberlake, Colin Firth and Armie Hammer all made their dapper debuts, while NBC News anchor Brian Williams received top haute honors, scoring rank on the list's Hall of Fame.
Other notable names include Paris Hilton's ex-fiance Stavros Niarchos, Uma Thurman's moneybags beau Arpad Busson, Princess Charlene of
Monaco, the First Lady of France Carla Bruni-Sarkozy and Princess Alexandra of Greece.
The entertainment magazine's 72nd annual list, which honors the most fashionable celebrities, politicians, royals and personalities, is part of their massive September 2011 issue and will hit newsstands nationwide on August 9.