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!

19 of 29

CHRISTOPHER ATKINS

Then: He romped with then-15-year-old Brooke Shields in 1980's deserted-island romance, The Blue Lagoon. "There wasn't a corner on this planet that I couldn't go where I wouldn't get mobbed," says Atkins, who appeared nude in the film.