It Girls may come and go, but Hello Kitty will always be cool in our books. So to celebrate our October It Issue, we teamed up with Forever 21 and Sanrio for one major party last night at The London Hotel in Los Angeles. In addition to plenty of cat ears, we had lots of our Hollywood favorites in attendance. There was Sarah Hyland, the Modern Family star who also starred in our first annual NYLON Beauty Awards, (clearly, she learned a thing or two from the experience, considering how perfect her hair and makeup was), along with Ana Mulvoy, Bella Thorne, Greer Grammar, Hana Mae Lee, and more. Judging by the photos, they all clearly brought their fashion A-game. We've picked a few of our favorites, but there are lots more snaps from last night--see all of our party photos here!