The new Miley Cyrus film “The Last Song” comes out March 31, and this afternoon the Disney star was joined by co-stars Liam Hemsworth and Greg Kinnear for a press conference that was streamed live on UStream. Miley plays a rebellious teen who is sent to live with her divorced dad for the summer and finds romance in a southern beach town. Fans will see a much more grown-up Miley than they’ve grown used to on “Hannah Montana!”