The 35-year-old star shows off her incredible legs (and cleavage!) in a new Instagram photo

Jessica Simpson‘s vacation swimsuit photo shoots keep coming! The star is currently on a tropical trip with her family, where she’s busy celebrating her 35th birthday and showing off her amazing figure in a number of sexy looks. Unsurprisingly, she just managed to one-up the last swimsuit snap she posted.

Jessica Simpson swimsuit photo

Courtesy Jessica Simpson

Simpson posed against a white wall in a plunging, ruffle-front one-piece that enhanced her cleavage. And to make the moment more glam, she added some white platforms and coordinating sunnies, plus, a messy updo. “Vacation vibes,” she captioned the photo.

Over the weekend, she shared a pic with her vacation “babes,” showing off her insane leg muscles.

Simpson is a proud Weight Watchers spokesperson and has been every open about her weight struggles in the past.

“I’d been scrutinized about my weight before I got pregnant, so I refused to let anyone steal the joy of my babies,” she told InStyle earlier this year of enduring criticism after having her two children. “My husband [Eric Johnson] and I were looking at old pictures recently, and I asked him, ‘Babe, why didn’t you tell me to put the brownie down?’ He said, ‘You looked great.’ He’s always loved every curve on my body. And we’ve always had a healthy sex life.” (More proof of that last statement: These photos.)

Simpson trains with celebrity workout guru and PEOPLE blogger Harley Pasternak, who shared her 4-step leg workout routine last year. (The moves, he noted, make her “genetically-gifted legs” even more amazing. Fun Fact: Tina Simpson was an aerobics instructor!)

RELATED VIDEO: How to get Jessica Simpson’s Sexy Legs!

–Brittany Talarico