Melissa Joan Catherine Hart (born April 18, 1976) is an American actress, writer, television director, television producer, singer and businesswoman. Hart is perhaps best known for her title roles in the television series Clarissa Explains It All (1991–1994) and the live action version of Sabrina the Teenage Witch (1996–2003).
Hart's career has mixed movie work with television including appearances in the popular TV shows Law and Order and That '70s Show. Since 2010, Hart has starred in the ABC Family series Melissa & Joey. Hart has been married to musician Mark Wilkerson since 2003 and together they have had two children.
Hart was born on April 18, 1976 in Smithtown, New York, on Long Island, the daughter of Paula, a producer and talent manager, and William Hart, a shellfish purveyor, clam hatchery worker, and entrepreneur. She grew up in Sayville, New York. Her stepfather (since 1994) is television executive Leslie Gilliams, and her stepmother is Lisa Hart. Hart was named after the Allman Brothers song "Melissa", while her middle name, Joan, came from her maternal grandmother. She chose Catherine as her confirmation name when she was in the eighth grade.