01/31/2010 at 07:00 PM EST
Sure, her fiancé Russell Brand was on her arm at the Grammy Awards – but Katy Perry
found a new BFF at Sunday's award show. And the pop star was eager to show her off with a Twitpic
Yep, that's Jersey Shore
star Nicole "Snooki" Polizzi hanging out with Perry as she pulled up to the Staples Center. (Look closely, and you'll see Brand chilling in the backseat of the SUV!) Wrote Perry on her Twitter account, quoting the Black Eyed Peas lyric: "Tonights gonna be a good good night!"
The only way it could get better? If Perry won best female pop vocal performance for her hit "Hit N Cold."
Watch the 52nd Annual Grammy Awards on Jan. 31 at 8 p.m. ET/PT, live on CBS – and catch up on all the news and style from the show on PEOPLE.com!