Shia LaBeouf shocked his fans and followers on Monday (21Oct13) by posting a revealing snapshot from his new movie Charlie Countryman online.

The star, who once bared all in a Sigur Ros video, appears to have disrobed again in his new film - and he's putting the saucy shot up for all to see.

LaBeouf's tweeted picture features the seated actor with his head bowed. It cuts off just as his pubic hair begins.

He accompanied the photo with the caption: "tune in, turn on, drop out."