Britney's Costa Rica Bikini

Britney Spears bounces around in a bikini while vacationing with Mel Gibson at his secluded ranch in Costa Rica on Friday.

Brit Brit hit the beach with her William Morris agent Jason Trawick and assistant Brett.

The star looked relaxed as she sunbathed, ran into the water to play in the heavy waves and drove an ATV around the sand.

10+ pictures inside of Britney‘s Costa Rica bikini…