Matt Damon's Vow Renewal: Jimmy Kimmel Officiates, Guest List Revealed!

Sounds like the funnest — and maybe the funniest! — vow renewal ever! When Matt Damon and wife Luciana renewed their wedding vows on the Caribbean island of St. Lucia Saturday, April 13, it was a bonafide A-list affair. Indeed, even the ceremony's officiant was a celebrity: Jimmy Kimmel!

For the three-day celebration, Damon, 42, had the entire Sugar Beach Resort rented out (at a price in the mid six-figures) for his guests, which included Kimmel and fiancee Molly McNearney, Stanley Tucci and wife Felicity, Chelsea Clinton and husband Marc Mezvinsky, dress designer Naeem Kahn and wife Ranjana and director Gus Van Sant, a source confirms to Us Weekly. One contingent of the Hollywood guests flew over via private jet, according to the source: Chris Hemsworth and wife Elsa Pataky, actor Chris Messina and wife Jennifer Todd, Emily Blunt and John Krasinski and, of course, Damon's BFF Ben Affleck and wife Jennifer Garner.

Married (via small, private ceremony) since December 2005, Damon and his Argentina-born bride, 36, had been planning the extravaganza with wedding planner Bryan Rafanelli for several months, according to the source.

When it came time for the beach-adjacent ceremony, the bride, groom and their guests adhered to a loose dress code: Shades of white, cream and ivory. Exchanging vows beneath thatched roofs at sunset, the bride wore a cream-colored dress with a sequined belt at the waist, with her four daughters wearing complimentary gowns. Promised Land actor Damon similarly wore a tan-colored suit and flip-flops. (Kimmel's role as wedding officiant was a big surprise for all the guests, the source tells Us.)

After the "I do's," the couple and their guests retreated to the beach for a cocktail reception and dinner.

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"They've wanted to do it for a long time," another pal says of the vow renewal. "They had a tiny ceremony the first time, and wanted to celebrate with family and friends."

The duo share daughters Isabella, 6, Gia, 4, Stella, 2, and Alexia, Luciana's daughter from a previous marriage. "Lucy and the girls can definitely bring me to my knees," Damon told Playboy last year.

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