Wearing her brunette tresses down, the 34-year-old exposed her toned figure as she relaxed on the sand with her loved ones.
Sporting large glamorous sunglasses, Janette teamed a strapless, monochrome top with matching tie-side briefs.
The dancer’s bikini featured gold metal detailing and a eye-catching pattern throughout, which she showcased with her 139,000 Instagram followers.
Janette captioned an upload with her siblings: “#FamilyLove #MiamiBeach #DoubleTrouble #SisterSister.”
After informing fans she was indulging in a “beach day with my familia”, she still made sure not to forget someone “very special”.
Janette took time out from frolicking in Florida to wish her former Strictly partner Aston Merrygold a happy 30th.
In a close-up clip, the beauty commented: “Well today’s a very special someone’s birthday, and I thought I will celebrate for him here in Miami.
“Look at that, Aston happy birthday – I love you, all the way from across the pond. Mwah, dirty 30 baby!”
There was no sign of Janette’s spouse of less than a year, Aljaz, 27, who is thought to be back in his home country of Slovenia.
However, the star tweeted: “Can’t wait to start touring with my @JManrara! Come and see us and the incredible cast in our new @RememberingTour!”
Remembering Fred kicks off late next month in Leamington Spa and will conclude in Portsmouth in May.
Meanwhile, Aston himself revealed how he was marking his special day with his wife-to-be Sarah Lou Richards and their newborn son, Grayson.
The JLS hitmaker and his fiancée welcomed their first child last month and have been sharing adorable snaps of him online ever since.
Yesterday Aston shared their first ever family photo, which saw the couple cuddling up to their little one while he was slept peacefully.
“My little family. Thank you so much @sweet_bambini_ for shooting Grayson on his first photoshoot! Can’t wait to see the rest,” he captioned it.