AceShowbiz -

Matt Damon and his wife Luciana Barroso have said "I do" all over again, like it was previously rumored. The "Elysium" actor and his wife of nearly eight years renewed their wedding vows at Sugar Beach Resort on the Caribbean island of St. Lucia that they entirely rented for a reported $600k.

The Bride wore a cream-colored custom-made Naeem Khan gown featuring a sequined belt at the waist, while the groom dressed in a tan-colored suit. They exchanged vows in a 15-minute ceremony under thatched roofs right at sunset in front of family members and close friends, Us Weekly reported.

"They've wanted to do it for a long time," a source said. "They had a tiny ceremony the first time, and wanted to celebrate with family and friends." Another added, "This isn't a 'Hollywood' wedding. Matt wanted it to be fun, happy and private. He felt like Luciana deserves this, first and foremost."

The couple's children Isabella, 6, Gia, 4, Stella, 2, were there to witness the special occasion along with Alexia, Luciana's daughter from a previous marriage. The girls wore light-colored dresses to match their mom. After the ceremony, the guests were escorted onto the beach for a cocktail reception.

Among the A-list attendees were Damon's best buddy Ben Affleck and his actress wife Jennifer Garner, and Damon's "Behind the Candelabra" co-star Michael Douglas and his spouse Catherine Zeta-Jones. Chelsea Clinton allegedly came to the event as well.