Shia LaBeouf stopped by Jimmy Kimmel Live last night for yet another appearance in support of Transformers: Dark of the Moon. Shia was in great spirits after a successful NY premiere earlier in the week, and while on the East Coast he also got to meet one of his biggest fans, Selena Gomez. Selena has often spoken about having a crush on Shia, and she was adorably star struck when they finally came face to face. Jimmy joked that Shia should watch his back since her boyfriend, Justin Bieber, is a pretty powerful guy, and Shia shared about meeting Justin at the MTV Movie Awards. Check it out!