Guess The Celebrity

Oops!
Which celeb was spotted on set of their new movie with their pants undone?
Find out after the jump!
[Image via Pacific Coast News Online.]

It was Ryan Phillippe!
Reese Witherspoon‘s ex was filming for his upcoming role in The Lincoln Lawyer when he was caught with his fly down.
Next time you might wanna double check your crotch before leaving your trailer, Ry.