BROOKE SHIELDS, 48
The hair's a little straighter and she's got a few laugh lines, but Shields hasn't lost any of the wholesome gorgeousness she possessed in 1982 (left), when she was a teen superstar thanks to films like The Blue Lagoon and Endless Love. Now playing a middle-aged mom in the comedy The Hot Flashes, Shields keeps things simple, beauty-wise: "Clean, tone, keep yourself moisturized," she tells Health magazine. "The rest is internal: Protect yourself from the sun and drink water." Good genes (and good jeans – remember her controversial 1981 Calvin Klein ads?) undoubtedly also help.