Jessica Alba Cash Warren bikini bikini drink glasses sunglasses baby hat Spread Pictures

We're not sure who's watching their kids, but Jessica Alba and Nicole Richie enjoyed some quality girl time together in St. Barth on Thursday afternoon. The hot mamas went for a stroll on the beach, and later we snapped them enjoying a few cold beverages at lunch with their friends.

Interestingly enough, Jessica's hubby Cash Warren is traveling with them, but Joel Madden is still here in Los Angeles. Wonder why he opted out? Is there trouble in paradise?

Nicole certainly seems to be having a blast, and while Jess has an insanely hot bod, she's looking pretty good too:

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