Who the F is this?

Her name is Katie Cassidy.

Cassidy, 22, is best known for her roles on CW’s Melrose Place and Supernatural, but we don’t watch either!

Cassidy instead caught our attention at the 2009 Hollywood Style Awards while donning this fierce, Jetsons-esque number with a spectacular up-do.

Hope to see more of u soon, KC!!

Going in for The Kills

Indie rock duo The Kills have plenty to celebrate these days.

The band, comprised of vocalist Alison Mosshart and guitarist Jamie Hince, have already received a world of praise for their fantastic 2008 release Midnight Boom, not to mention, soundtracking credits for a little show on The CW called Gossip Girl.

Oh yeah, and Hince’s off-and-on girlfriend, Kate Moss, is also a fan.

So you can imagine the excitement when the pair showed up at The Annex in New York Saturday night for an after-party following their Webster Hall performance!

The twosome earned visits from celebrity fans like Winona Ryder, Jessica Stam, Agyness Deyn and Alexa Chung, while event impresarios Alejandro Torio and Bloc Group’s Matthew Isaacs had guests dancing and partying all night.

The Kills still have a handful of U.S. dates coming up this month, so be sure to pick up your tickets!!

It’s a show not to be missed!