Bo Derek (born Mary Cathleen Collins; November 20, 1956) is an American film and television actress, movie producer, and model perhaps best known for her role in the 1979 film 10. The film also launched a bestselling poster for Derek in a swimsuit, and subsequently she became one of the most popular sex symbols in the 1980s. Her later films were not critically well received. She makes occasional film, television and documentary appearances. Early in her career she used the name Kathleen Collins.