This is a Public Service Announcement for all potential guests on the Jimmy Kimmel Show. If there is an awkward teenage photo of you out there, he will find it, and he will use it. 

Margot Robbie found this out the hard way when she appeared on the show the other night to promote The Legend of Tarzan. The host mentioned the fact that the new Tarzan movie is being directed by the David Yates, the man behind the last four installments of the Harry Potter franchise. Which is a wildly exciting for a self confessed Harry Potter nerd. 

Kimmel decided to show the audience just how big a Harry Potter fanatic Robbie was by sharing an embarrassing photo from her youth.