Look out, Blair: Ex-Melrose Place vamp Katie Cassidy is relocating to Manhattan.
Sources confirm to me exclusively that Cassidy — who was arguably the best thing about last season’s ill-fated Melrose reboot — is staying in the CW fold with a multi-episode arc on Gossip Girl.
She’ll play a student at Columbia and a love interest for fellow undergrad Nate (Chace Crawford).
This next bit probably goes without saying, but a Gossip source tells me that Cassidy’s character “will make trouble” for several Upper East Siders, adding, “She is not what she appears.”
Cassidy will first air in the season 4 premiere.

EW.com

This sexy bitch may make me want to watch GG.

*starts watching Gossip Girl again*

Katie will bring back the heatness that GG had in the first two seasons, i know it. I'm a huge fan of her.