8 Beloved Child Actors Who Completely Disappeared From Our Screens

2. Ashley Olsen

One half of the not-quite-identical acting Olsen twins & sister to both Mary-Kate and Elizabeth Olsen, Ashley became a huge success along with M-K in a series of children's shows and movies, and quickly became a force beyond just being cute kids onscreen. The twins developed a brand image like no other and sold hundreds of different products with their blessing and even had their own fan club, and eventually formed and became co-presidents of a fashion company, Dualstar.

While Mary-Kate continued to take on acting roles, however, Ashley decided to stick with the business and it's served both of them extremely well, with the twins consistently ending up on the Forbes "Celebrity 100" list since 2002 and were estimated in 2007 to have a net worth of $100 million. If only most child stars were this business-savvy...