Enjoying some alone time as a couple, Jessica Alba and her hubby Cash Warren hit the beach on St. Barts on Saturday (4/6/2013).

Lovely in a navy blue bikini, the “Sin City” beauty floated on a raft alongside her hunky man in the refreshing blue waters.

Yesterday, mother-of-two was accompanied along the shores by Nicole Richie and other friends, as the group frolicked in the sand.

Clearly thrilled to be getting away from it all for a few days, the bubbly brunette tweeted, “Lunch #lifelove &happiness.”