LOS ANGELES, California (X17online) - Woody Harrelson and his longtime girlfriend, Laura Louie, were married on Sunday in Maui, Us Weekly reports.

The couple have been together for 20 years, and they have three daughters; Makani Ravello, Zoe Giordano, Deni Montana.

According to the magazine, the ceremony near Harrelson's Kipahulu home was small and intimate. Celebrity friends in attendance included Owen Wilson, Willie Nelson, Sean Penn and Alanis Morissette, who sang at the wedding.