Megan Fox showed off her hot toned body in a small bikini during a trip to Hawaii belying the fact that she already has two kids. The "Teenage Mutant Ninja Turtles" star also packed on some PDA with husband Brian Austin Green.

According to a report from E! News, the 28-year-old was playing in the water with the "Anger Management" actor.

"They are one of those couples that have not lost their sense of playfulness with each other," a source told the website. "Brian is very respectful of Megan, but loves to play around."

Her hot bikini was too small that a tattoo of "Brian" near Megan Fox's crotch peeked through.

"The Zeroville actress, 28, put her toned abs on full display in a skimpy brown bikini by Vitamin A. She wore leopard print sunglasses and kept her tousled brunette locks down," Us Weekly said.

It was in Hawaii that Megan Fox and Brian Austin Green tied the knot at the Four Seasons in June 2010.

As to how Megan Fox is able to maintain her hot bikini body, she told E! News, "I cut out all bread and those sort of carbohydrates. No crackers, no pretzels, no chips. Nothing unhealthy. The worst thing I put in my body is coffee, once a day."

She also claimed that she doesn't have cheat days, or if she did she limits them to a slice of pizza or cake.

"It's like giving up smoking. I gave up smoking cold turkey. "I'm one of those people when I'm committed, there's no stopping me. So, I did it and after about a week, it repulses me. Like, there's bread over there and never again would I put that in my body," Megan Fox said.

Megan Fox and Brian Austin Green has two children, Noah and Bodhi. The 41-year-old actor also has a son from previous marriage named Kassius Lijah.