Malin Akerman (in Cushnie et Ochs) and Brooklyn Decker (in Dior) became fast friends at the after party for the Los Angeles premiere of Decker's new movie, Battleship. "Great job in the movie," Akerman Tweeted at the model-turned-actress. "You are one rad chica!" The sci-fi thriller—co-starring Rihanna, Taylor Kitsch and Alexander Skarsgård—hits theaters May 18th. See more stars at last night's hottest parties in the gallery.