Rihanna headed home to Barbados for Christmas, but instead of holiday snowstorms she was greeted by tropical weather, which meant it was time to hit the beach. She sported a black one-piece with a panther on it for Sunday's sandy stroll, and yesterday she showed off more skin in her string bikini. She also tested out a jet ski, which is one of her favorite ocean activities. She's been hitting up the local scene and spending time with her family while in the Caribbean, but she'll be back to host a party at Pure in Las Vegas on New Year's Eve. Rih's love for Sin City has apparently been passed down to her siblings as she joked on Twitter that her 14-year-old brother was already asking to celebrate his birthday there next year.