It's was a boys' night out for Gossip Girl costars Ed Westwick and Chace Crawford in NYC yesterday. The pair took time off from work to join Emma Roberts at T-Mobile's Samsung Galaxy S II and HTC Amaze 4G launch. Ed got a one-on-one tutorial on how to use the Android phone, while Chace caught up with his Oscars date, Emma. It was the second evening out in a row for Chace after he joined another hot up-and-comer, Elizabeth Olsen, at the New York Film Festival premiere of her Martha Marcy May Marlene on Tuesday. Chace and Elizabeth struck up a friendship filming Peace, Love, & Misunderstanding, and hung out last month at their Toronto Film Festival screening. In addition to keeping up their busy social calendars, Chace and Ed have been on a tight shooting schedule that includes sharing scenes with the newly single Blake Lively.