damonwifewedding460.jpg It's nice to see that some Hollywood marriages really do stand the test of time!

Matt Damon and wife Luciana renewed their wedding vows in an intimate island ceremony at the Sugar Beach resort in St. Lucia on Saturday, and they had a star-studded guest list to help celebrate the momentous occasion!

Fifty guests, including Ben Affleck and wife Jennifer Garner, watched as the couple swapped sweet words under a thatched roof at sunset. The Bourne actor wore a tan suit and flip flops, while his lady love donned a cream colored gown. Their four daughters Isabella, Gia, Stella, and Alexia were also on hand for the special day.

"This isn't a 'Hollywood' wedding. Matt wanted it to be fun, happy and private. He felt like Luciana deserves this, first and foremost," a source told Us.

The cost for the bash? A whopping six figures!

Lucy is one lucky lady to have a man like Matt!