On her 35th birthday, Jessica Simpson rented a private plane and flew to St. Barts with family and friends, PEOPLE reports.

In her week-long fabulous birthday vacation were 30 of her closest people including mom, Tina, and husband, Eric Johnson.

"She rented a few yachts - 'his' and 'her' yachts. The girls were on one and the boys were on the other," a source told PEOPLE. "They spent the days island hopping."

The pop-star-turned-fashion mogul soaked up the sun in her bathing suits that showed off her toned post-baby body. Enjoying fun activities like snorkeling and riding on jet skis, Simpson was all about having a great time on her birthday.

Her attendees also feasted on candlelit dinners, with a mac and cheese bar, that were catered by a personal chef.

At the night of her birthday, July 10, everybody dressed up in costumes in a burlesque-themed party.

"She got a lot of sentimental gifts from friends and stuff for her new music studio - and some jewelry and a guitar," the source added. Simpson posted an Instagram photo on Sunday. "I love these vacation babes," she wrote.

"30 friends on vacation celebrating this beauty @jessicasimpson. You are loved. Thanks for raising my street cred. Happy birthday. Love you. #yesimflexing," one of her friends posted.

"When one of your besties whisks you away to paradise. Happy birthday & anniversary to you beautiful @jessicasimpson. We love you like whoa," another friend captioned.

The 35-year-old singer, reality television star, movie actress and entrepreneur is mother of three-year-old Maxwell Drew, and two-year-old Ace Knute following her marriage with American football player, Johnson on July 5, 2014.

Johnson, whom she started dating in 2010, is her second husband after her divorce with 98 Degrees singer, Nick Lachey. Jessica Simpson became more popular when she starred with Lachey in the MTV reality show, "Newlyweds."