Katie Cassidy

New Troublemaker On Gossip Girl

You know you love me, xoxo

Blair and Serena better watch their backs; a new b***h will be in Manhattan real soon.

Katie Cassidy (the recently-cancelled Melrose Place, and the 2010 A Nightmare On Elm Street) is said to be the latest actress to join Gossip Girl. She will play a student at Columbia University and a love interest for Nate (Chace Crawford). Katie's character will no doubt bring trouble for both Blair and Selena.

Katie, who is currently shooting Monte Carlo with Selena Gomez, Leighton Meester and Cory Monteith, will appear in the first episode of Season 4.