David Charvet Posts Up with Mystery Bikini Babe in St. Barts

David Charvet is still getting residuals from "Baywatch" ... but the kind he's scoring is better than cash.

The actor who famously played Matt Brody is living large on vacay in St. Barts. David's bod deserves an appropriate measure of attention, but in this case the spotlight belonged to someone else.

Enter the mystery woman by his side aboard a luxury yacht, suited up with a "Baywatch" standard issue ... you know, the type that made men sweat in back in the '90s.

We don't know who she is ... but one thing seems clear -- whatever David had going on with Jermaine Jones' estranged wife, Sarah Jones, earlier this year is in his rear view.