Rick rubin ,Jay z, Rusell simmons Def Jam celebrated their 25th anniversary Friday night with a star studded event featuring some the label's most recognizable faces. Included in that lineup was former Def Jam head Jay-Z , founders Rick Rubin and Russell Simmons and former execs Kevin Liles and Lyor Cohen . The Hip-Hop cohorts converged on "The Spotted Pig" where they held a private dinner and invited out Young Jeezy, Terrence J and a number of others. terrence J Young jeezy Julissa Def Jam was created by Rick Rubin in his dorm room in Weinstein Hall at New York University and its first release was a single by his punk-rock group Hose . Russell Simmons joined Rubin shortly after they were introduced to each other by Vincent Gallo . Def Jam Recordings is an American record label, focused primarily on hip hop and urban music, owned by Universal Music Group, and operates as a part of The Island Def Jam Motown Music Group. photos ;hiph