Gene Simmons and Shannon Tweed have tied the knot in a lavish Beverly Hills ceremony. The wacky KISS rocker and his girlfriend of 28 years, Shannon Tweed, finally said "I do" Saturday night in front of friends and family at the Beverly Hills Hotel. The happy couple - who have their own realityshowGene Simmons Family Jewels - had some help from their children when it came to planning their big day.