Britney Spears knows how to make a splash both in and out of the water.
The 31-year-old singer showed off her toned bikini-body in a tiny blue two-piece as she soaked up the sun poolside at the Terranea Resort in Rancho Palos Verdes, California.
"I'm doing 90 minutes of yoga twice a week in addition to a lot of cardio -- hour-long sessions three times a week with my trainer, Tony Martinez," Spears told Shape magazine in May. "The [Vegas] performances won't be simple — they'll be a massive party from start to finish. And to pull this off, I have to be in top condition and running at full speed."