Glee & Gossip Girl: Birthday Bash for Pals!

Emma Roberts and Glee pal Jenna Ushkowitz walk out of the star-studded birthday bash for writers James Krisel and Tom Gormican held at producer pal Holly Wiersma‘s posh pad on Saturday night (April 2) in Los Angeles.

JustJared.com can exclusively reveal the twosome celebrated alongside Captain America stud Chris Evans, Chuck‘s Zachary Levi, Topher Grace, Lucy Punch, Will Arnett, Riley Keough, Cat Deeley, Toby Hemingway, Rachel Nichols, musician Kenna, Will McCormack, writer Allan Loeb, Dallas Cowboys QB Tony Romo, The Hurt Locker‘s Brian Geraghty, Glee‘s Dianna Agron, 90210‘s Shenae Grimes and Jessica Stroup, and Gossip Girl‘s Chace Crawford, Jessica Szohr, and Sebastian Stan. (Tony is engaged to Candice Crawford, Chace‘s sister.) What a guest list!

Inside the balloon-filled house, partygoers noshed on pizza before polishing off delicious vanilla and chocolate layered cakes. The party didn’t stop until 3 in the morning!