Gene Simmons Marries Shannon Tweed

Gene Simmons has officially wed his longtime girlfriend, Shannon Tweed!

The two finally got hitched on Saturday in Beverly Hills. The KISS rocker and former supermodel were joined by more than 400 guests (we're betting no one wanted to miss the chance to see this actually go down), including Hugh Hefner and Bill Maher.

The evening was filmed for the couple's A&E reality series, Gene Simmons' Family Jewels. Seems they're taking a page out of Kim Kardashian's book; a special wedding episode will air later this month.

Simmons, 62, proposed to former Playboy Playmate Tweed, 54, with a 24-carat diamond. They've been together for 28 years and have two kids -- Nick, 22, and Sophie, 19.