Dualstar Entertainment Group, LLC is a privately held American mass media and entertainment limited liability company owned by twin sisters Mary-Kate Olsen and Ashley Olsen. Dualstar was founded May 5, 1993, as Dualstar Productions, before adopting its current name in 1994. The company established a niche for itself when it entered into a producing agreement with ABC for several TV movies, after the twins starred in the long-running television series Full House.