Ever wonder what your favorite celebrity was like as a teenager?
Well, MTV has been airing episodes of its “When I Was 17″ series since Saturday, May 1. The series shows how artists’ lives are different from the average viewers’… or how they are the same.
Check the gallery below to see some flashback photos of two of today’s biggest names:
Want more “Guess Who’s?”
And take a look at them now!
Watch the clip below to hear this star reminisce about his favorite pasttime: