Katy Perry Taking Allison Williams to Grammys | Video Video: Katy Perry's Date Surprising Grammys Date — Allison Williams! February 7, 2013 Kim and Kanye's Most Over-the-Top... Woody Harrelson: Out of the... Top That! Fans Remember Paul... One of a Kind Trina Turk: The Big... Find the Perfect Madewell Holiday... Are Jessica Biel and Justin... Sing Some Fa La Las With the... Watch, Pass, Rent: Inside Llewyn... Bethenny Frankel on Why This... Watch the POPSUGAR Live! Holiday... Jake Gyllenhaal Finds the Humor in... Forget Going HAM — Birthday Boy... 50 Shades of 2013: A Year of... 3 Reasons There Was No One Quite... It's a Holiday Gift Guide... Jake Owen Has the "Greatest Gift"... Britney Spears Reveals Details of... The Perfect Smoothie How Will Fast & Furious 7 Move on... Who on Earth Wouldn't Want to... by Matthew Rodrigues 0 Save 0 Favorite 0 Star of HBO's hit Girls, Allison Williams revealed on Anderson Live that she will be Katy Perry's date for Grammy night. How did they become friends? We have all the details! View Transcript » Transcript Katy PerryPOPSUGAR NewsPOPSUGAR EntertainmentAllison WilliamsJohn MayerGrammy Awards Tell your friends What’s Your Reaction? 0 0 0 0 0 0 0votes Link Love Miley Cyrus had the most-viewed videos of the yearETJennifer Lopez is changing her name — Us WeeklyWhat is Lindsay Lohan doing in Miami? — Lainey GossipParis Hilton is unhappy about her Twitter hoax — HuffPost CelebrityMadonna's son Rocco is all grown up — PeopleAmy Poehler gives the best advice — BuzzFeedWas The Sound of Music Live! really that bad? — The Daily BeastBrian Griffin may come back to Family Guy — Pink Is the New BlogSpencer Pratt graduates USC after 10 years — D-ListedWhy was Scandal's season cut short? — JustJaredJessica Hart works it for Victoria's Secret — Hollywood TunaJanuary Jones gets in the Christmas spirit — The SuperficialThe Kardashians' show is losing viewers — PopBytes No Comments Sign in to leave a comment Sign in with your account Don't have an account? Create one now! See More Grammy Awards Fitness Dec 04, 2009 Get the Bod: Lady Gaga Grammy Awards Feb 12, 2012 Carrie, Rihanna, Katy, Fergie, and More Get Sexy on the Grammys Red Carpet Celebrity Beauty Nov 25, 2013 Zoom In on the Manicures From the AMAs and More! Grammy Awards Feb 13, 2012 See All the Pictures From the Grammys Red Carpet, Show, and More Fitness Feb 05, 2013 Get Pink's Toned Abs With This Workout! Grammy Awards Feb 13, 2012 Video: Katy Perry Debuts New Song About Breakup at Grammys See More john mayer Jessica Simpson May 18, 2007 Jess & John Split!! Nooooooooooooooooo... Madonna Jul 09, 2007 Live Earth Rocks The World on 7/7/07 Eva Longoria Jan 21, 2013 Beyoncé, Eva Longoria, and More Stars Celebrate Inauguration Weekend Celebrity Birthdays Oct 16, 2012 John Mayer Turns 35 — See the Many Lovely Ladies in His Life POPSUGAR News Apr 15, 2010 PSR 4/15/10: John Kisses a Fan, Kristin Reacts to Brody & Avril, & Ryan in Tights! Rolling Stone Jan 31, 2013 John Talks Katy — and More of Today's Headlines! See More Allison Williams celebrity fitness Jan 09, 2013 Celeb Move to Steal: Allison Williams's Go-To Tummy Toner celebrity interview Feb 07, 2013 Allison Williams Would Love to Be "Best Friends" With Kate Middleton award season Feb 28, 2013 The 100 Most Memorable Moments From Award Season Red Carpet Jan 10, 2013 Lena Dunham Brings Her Girls, and Boys, to the Girls Season 2 Premiere Celebrity Interviews Sep 22, 2012 Girls Star Allison Williams Says Marnie Won't Be "Asexual" Next Season POPSUGAR News Oct 16, 2013 Who's the Latest Actress to Name Jennifer Aniston as Her Hair Idol? See More Katy Perry Bikini Jul 19, 2010 Katy Perry Brings Out Her Bangin' California Girl Bikini Body! Bikini Dec 30, 2008 Katy Perry's Bikini Body Is Hot and Hotter Bikini Oct 25, 2013 See Katy Perry in Various States of Undress celebrity tattoos Jun 28, 2013 100+ Memorable Celebrity Tattoos POPSUGAR Entertainment Jun 13, 2011 Watch Katy Perry's Music Video For "Last Friday Night (T.G.I.F.)" Rolling Stone Jan 31, 2013 John Talks Katy — and More of Today's Headlines! You Might Also Like Beauty Jun 13, 2008 Coutorture Community's Must Reads 6/13 Poll Jul 20, 2008 What's Tackier? Bikini Jul 07, 2006 Who has the best beach butt? Red Carpet Jul 27, 2010 Video: Angelina's Sexy Slit, Gwyneth Sings Country, and Zac's Childhood Pics!