The What to Expect When You're Expecting gang convened at the AMC Lincoln Square Theater in NYC last night for their first big premiere. The picture, which is out here in the US on Friday, May 18, is about to get the full attention of stars like Cameron Diaz, Brooklyn Decker, and Jennifer Lopez. Each of the ladies has been busy with other endeavors recently. Brooklyn's doing double-duty chatting up Battleship and Jennifer's in the midst of a crazy season with American Idol. Jet-setting Cameron, meanwhile, recently hit the Met Gala Monday, along with Brooklyn. Brooklyn had the support of pals Chrissy Teigen and Erin Andrews on the red carpet. She tweeted thanks to her pals and also humbly wrote, "I truly still can't believe I'm in this movie." Jennifer's Idol duties kept her on the West Coast, but Cameron made the rounds in the Big Apple saying hi to costars like Chris Rock, Rodrigo Santoro, Chace Crawford, and a Peter Pilotto-clad Elizabeth Banks.