Sneak Peek! Child Stars: Then & Now

Find out where Kirk Cameron, Blossom's Mayim Bialik, the Charles in Charge girls and more child stars are in this excerpt from PEOPLE's new book, in stores June 23!

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PETER BILLINGSLEY

Now: He's the (mostly) silent member of the Vince Vaughn-Jon Favreau comedy cartel. After meeting Vaughn when the two costarred on an after-school special in 1990, Billingsley, 37, has since executive-produced The Break-Up (starring Vaughn and Jennifer Aniston) and Iron Man (directed by Favreau).