[Soledad O'Brien, Randi Zuckerberg, Sade Baderinwa, guest, Trisha Yearwood, Allison Williams, Aimee Mullins, Andie MacDowell via]

Last night in NYC, Allison Williams and Arianna Huffington presented awards to this year's L'Oreal Paris Women of Worth winners, Elijah Wood stepped out for the NYC premiere of The Hobbit, Alicia Keys and Jennifer Hudson performed at the Apollo Theater, and much more!

[Michelle Obama, Barack Obama] [David Letterman, Dustin Hoffman]

Hollywood came to Washington for a weekend of formal events surrounding the 35th Kennedy Center Honors, an elegant awards ceremony which honors those who have impacted American culture through the performing arts. Find out what you missed (and what Michelle was wearing...)

The 54th Annual Grammy Awards takes over the Staples Center; Paris Hilton and Afrojack attend EMI's Grammy after party; Tony Bennett and Diana Krall perform at Clive Davis and The Recording Academy's Pre-Grammy Gala; Ne-Yo and Compound Entertainment throw a Pre-Grammy midnight brunch; Kelly Clarkson and John Legend attend Sony Music Group's Grammy Reception at Cecconi's; Bruno Mars performs at Warner Music Group's Grammy Celebration hosted at Chateau; Jay-Z's Roc Nation holds a pre-Grammy brunch at Soho House; MusiCares honors Paul McCartney as person of the year and raises $6.5 million for artists; Cash Money Records holds their 3rd annual pre-Grammy Awards party with Lil Wayne and Drake; Flo-Rida and Pia Toscano rock the house at OK! Magazine's pre-Grammy event—Los Angeles was alive with music this weekend and we've got your inside scoop on all the festivities and the celebrities who attended them in this edition of Last Night's Parties! More»