The reality star and singer proudly flaunted her bikini bod and flawless tan (she owns her own tanning range called Fruity Tans) on the balcony of her hotel in Sin City on Thursday (14 August).
Well, hey, if you've got it, flaunt it, right?!
Jessica is currently in Vegas celebrating a friend's hen do and, judging from her Instagram snaps, they're having a pretty awesome time.
Yesterday, the gorgeous star uploaded a shot of herself and pal looking insanely glamorous while chilling out by the pool.
Love the hat, Jess!
Although Jessica is clearly having an absolute blast in Vegas, she still remembered to send a special message to her mum and dad, Carol and Big Mark, on their wedding anniversary.
Sharing a picture from their wedding to Instagram, she said: "Happy anniversary to my amazing parents who are my world! Love you so much mum & dad."
Fans were quick to send their messages of congratulations too, with more than 12,000 of them liking the picture! "Such a great photo," wrote one. "They look so young! You all look so much like your mum and dad. Hope they had a great wedding."
Another said: "What an adorable picture!"
Reveal is now on Google Plus! Join us here for the latest pictures, fashion and celebrity news!