Jessica Simpson catches rays on tropical birthday getaway with husband Eric Johnson and friends

Jessica Simpson Tans in String Bikini, Husband Eric Johnson Packs on the Pounds -- See the Pics!

Jessica Simpson celebrated her birthday with a tropical getaway on the tiny French Polynesian island of Le Taha'a.

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The fashion entrepreneur -- who turned 36 on Sunday -- celebrated early with a relaxing beachside getaway on Thursday. She spent the day soaking up the sun and showing off her killer body in a red-and-yellow string bikini.

A few months after flaunting his six-pack during a vacation to Cabo San Lucas in January, Simpson's husband, former NFL pro Eric Johnson, stayed slightly more covered up while chatting with friends beside the water.

NEWS: Jessica Simpson Shares Adorable Family Photo at Son Ace's 3rd Birthday Party

Last week the couple celebrated the third birthday of their son, Ace Knute, with a dinosaur-themed party. They posed for an adorable family photo at the fete that also included their 4-year-old daughter, Maxwell Drew. The kids weren't spotted during Thursday's island outing.

Simpson looked equally as stunning during a date night with her 37-year-old hubby in May. Check out her killer LBD in the video below.

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