beach couple beach couple

If we looked this good at the age of 48, we'd be hitting the beach without a shirt, too!

Designer Marc Jacobs continued his fabulous (and shirtless!) vacation in St. Barth with ex fiance Lorenzo Martone.

With all those unique tats, there's no mistaken Mr. Jacob's body. And check out his M&M towel. Who knew the chocolate iconic candy could be so fashionable?

By the looks of it, these two former lovebirds are enjoying each other's company. They're both sexy ... and they know it!