Rihanna's new black hair was on display this morning at a Battleship photocall in Japan. She joined director Peter Berg on the USS George Washington in Yokosuka. Rihanna's costars Brooklyn Decker, Alexander Skarsgard, and Taylor Kitsch were also on hand. It's the latest press stop for the cast. Brooklyn and Alexander took the action picture, which hits theaters on May 18, to Europe last month and attended press events in Madrid, Barcelona, and Hamburg. Promotion for the movie will bring the gang home to the US ahead of its big debut.