Credit: Splash News Online

Newly single Scarlett Johansson looked un-glam -- but still sexy -- getting some R&R in Jamaica on Wednesday.

The day after her announced split from Ryan Reynolds, a low-key Johansson was photographed in a cleavage-bearing bikini top and loose tank top -- plus shorts, sunglasses and a hat.

The Iron Man 2 actress, 26, is on the tropical island with pals as she processes the end of her two-year marriage to Reynolds, 34.

A source told Us Weekly that Johansson has "confided in friends" since the breakup, and was "unhappy for a while" in the union.

Reynolds, meanwhile, has "has been reaching out to an ex the past few months," another insider says. "He is seeking comfort, but not in a romantic or sexual way."