Nicole Richie and Joel Madden Married in Los Angeles

After four years together, Joel Madden and Nicole Richie are officially married.

The Good Charlotte singer and fashionista tied the knot on Saturday (Dec. 11), exchanging vows at Richie's father Lionel Richie's Los Angeles estate in front of approximately 130 of their closest friends and family.

Among the stars in attendance: Madden's twin brother and Good Charlotte guitarist Benji Madden, along with Samantha Ronson, Gwen Stefani and Gavin Rossdale.

Run-DMC member and practicing minister Rev Run officiated the ceremony, according to UsMagazine.com, while People.com reports that a trained elephant was present for the festivities.

Madden and Richie, who have been together since 2006, announced their engagement in February. The couple has two children together, two-year-old daughter Harlow (who was the flower girl at the wedding) and 15-month-old son Sparrow.