'Girls' go Grammys: Lena Dunham and Allison Williams are excellent plus ones

allison-williams-katy-perry-grammys.jpg

Wondering what Lena Dunham and Allison Williams are doing at the 55th Grammy Awards? Here's a hint: look at the people they're sitting next to. Both "Girls" stars are plus ones to the Grammy-nominated musicians Jack Antonoff and Katy Perry.

Considering the fact Antonoff and Dunham have been dating for a while, it's no surprise that Dunham decided to tag along to the Grammys. After all, she brought him to the Golden Globes and recently called him her "best advertisement." At least she understood that she took second fiddle during Fun's big night, letting her boyfriend walk the red carpet with his bandmates and later meeting up with him inside the Staples Center.

The Perry/Williams connection might not be as obvious, but honestly, who in Hollywood isn't Katy Perry friends with? She likely opted to bring Williams with her because Perry's boyfriend, John Mayer, is close with Williams' beau -- and College Humor founder -- Ricky Van Veen, and the girls have reportedly become BFFs. Williams should feel extra special because Mayer also attended the Grammys to present an award, but Perry decided to bring her instead. Now that's true friendship.

Who were your favorite plus ones of the Grammys?

Photo/Video credit: Getty Images