When does The Girls Next Door return?

The Girls Next Door is a reality television series which focuses on the lives of Hugh Hefner's girlfriends who live with him at the Playboy Mansion. The series premiered on the E! cable network on August 7, 2005 and ran for 6 seasons. The first five seasons centered around then-girlfriends, Holly Madison, Bridget Marquardt and Kendra Wilkinson. The sixth and final season premiered on October 11, 2009. The success of the series was followed by several spin-offs, including Kendra and Holly's World.