PHOTOS: Sienna Miller's Itsy-Bitsy Pink Bikini

Sienna Miller is all about having fun in the sun this season. The bikini-clad starlet was spotted strolling along the beaches of Barbados and participating in water sports like jet skiing. It's been a beachy-keen winter so far for the actress, who spent the holidays in the Caribbean with on-again boyfriend Jude Law and his children.