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Gene Simmons & Shannon Tweed Finally Wed

10/2/2011 10:58am EDT

Gene Simmons and Shannon Tweed

KISS star Gene Simmons has married his longtime partner Shannon Tweed in a romantic ceremony in California.

The couple, who have been together for 28 years and have two grown-up children, exchanged vows they had written themselves during an outdoor ceremony at the Beverly Hills hotel in Los Angeles on Saturday in front of 400 guests, including Playboy boss Hugh Hefner.

Simmons' KISS bandmate Paul Stanley was among the wedding party and the couple's daughter Sophie acted as maid of honor, according to People.com.

The publication reports Sophie, 19, also sang "At Last" by Etta James as the newlyweds took their first dance as man and wife.

Gene Simmons and Shannon Tweed

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Photo Credits: © A&E Television Networks. All rights reserved; Greg Tidwell, PacificCoastNews.com