J. Lo Shows Off Her Yellow Bikini Poolside

Jennifer Lopez, 43, took her celebrated body, her twins Emme and Max, 4, and her boytoy, Casper Smart, 24, poolside with her in South Beach, where she's on the Miami leg of her world tour with Enrique Iglesias, 36.

At one point, the humidity drove the new family from their comfy lounges chairs into the pool, where they couldn't stop laughing and playing around, a source told people People. "Casper looked like he was really into playing with the kids in the pool. They looked like a happy family."

J. Lo was decked out in an itsy bitsy, teenie-weenie yellow (sorry, no polka dots) bikini that was also strapless. Little Emme, who was having the time of her life dancing around and being spun up in the air by Smart, wore a red-and-white bikini.

Smart and J.Lo also took some time to themselves. Letting the kids play, they teased each other on the lounge chairs. "They were kidding each other, making jokes and enjoying the late summer afternoon," the source said. "They looked both energized and relaxed."

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