Britney Spears was in a bikini yesterday to play at the pool of her Rio hotel with boyfriend Jason Trawick and her sons Sean Preston and Jayden James. Her mom Lynne was also in a two-piece for the splashing session, and the girls stuck together while Jason horsed around with Jayden and Sean. The Spears clan is in Brazil as Britney takes her Femme Fatale tour through South America. They arrived in the city over the weekend, with Sean and Jayden not wasting any time before exploring the town. Britney's dad Jamie took the little ones to the beach, where they were seen running on the sand and testing the waves. It'll be back to work soon for Britney, as she'll take the stage tonight at Rio's Apoteose and will be in Sao Paulo this weekend.