Credit: GSI Media

Shia, is that you?!

Shia LaBeouf took a jog near his L.A. pad on Tuesday -- but the normally clean-cut Transformers star, 24, looked nothing like himself with a a full beard and a curly 'fro of hair on his head. See more photos of Shia's shirtless jog.

Currently filming the third Transformers flick, LaBeouf debuted a new mystery girlfriend -- reportedly an L.A. stylist -- last month. He and British actress Carey Mulligan (they met on the set of Wall Street 2) called it quits in September.

Tell Us: What do you think of Shia's scruffy new look?