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Kelly LeBrock
Then: LeBrock was one of the biggest sex symbols of the '80s thanks mostly to Weird Science. She was 25 at the time and already a famous model. She married action star Steven Seagal in 1987.

Now: Drug addiction and divorce forced LeBrock out of the limelight due to relentless paparazzi attention in the mid-'90s. She settled on a ranch with her children, but has taken some acting roles in recent years and is the celebrity spokesperson for "Club Carson," which helps the terminally ill.