After the news broke that Sony Screen Gems was kicking off a brand new Underworld trilogy with Underworld 4 (also said to be shot in 3-D), we started doing some digging and have stumbled on to a pretty big discovery. Two sources have told Bloody Disgusting that Kate Beckinsale is in fact attached to return as the beautiful vampire warrior Selene, who made her first appearance in Len Wiseman’s film from 2003. What does this mean? It means Kate-Beckinsale-in-pleather-in-mother-effin’-3D, that’s what! Now, I should be clear that this should be taken strictly as rumor as we have not been able to get any official confirmation from people involved in the actual film, or studio for that matter. We’ll keep you posted when something official is announced. Underworld 4 arrives in theaters January 21, 2011.