Emma Roberts & Chace Crawford: T-Mobile Launch Party!

Emma Roberts and Chace Crawford attend the T-Mobile Samsung Galaxy S II and HTC Amaze 4G Launch party held at Espace on Wednesday (October 12) in New York City.

The 20-year-old actress and Chace, 26, who worked the VIP area, met up with their Twelve co-star Philip Ettinger.

PHOTOS: Check out the latest pics of Emma Roberts

Chace also was seen chatting up his Gossip Girl co-star, Ed Westwick, who rubbed shoulders with Olivia Thirlby.

Alternative rock music duo The Black Keys performed while Harley Viera-Newton DJed.

Also in attendance: Kristen Wiig, Charlotte Ronson, Boardwalk Empire‘s Jack Huston, Khloe Kardashian, Kourtney Kardashian and her man, Scott Disick.

10+ pictures inside of Emma Roberts, Chace Crawford and more at the T-Mobile Launch party…