It's basic '90s-kid knowledge that before Michelle Trachtenberg was a socialite on Gossip Girl, she was the world's best elementary school spy.
But plenty of other teen stars you'd watch every week on the WB or UPN started their careers as cute child stars as well.
See also: 15 Celebrities Before They Were Famous [VIDEO]
Take a look at these actors' humble beginnings, complete with outfits that are so '90s, it's just painful.
Molly Horan was an editorial intern at Mashable. She's worked as an editorial fellow at Buzzfeed.com and an editorial intern at Dosomething.org and Crushable.com. Her web writing has also been published on Flavorwire.com, Sparknotes.com, and Nerve.co...More