The Pussycat Dolls singer, 40, looked stunning as she posed up a storm on the beach next to the trees in the exotic location.
She flaunted her toned abs and lithe legs in the two-piece which had pretty tie detailing at the sides and a cross over her midriff.
Ashley wore her blonde tresses swept up into an up do and opted to go makeup free for her day of soaking up the sun while accessorising with green sunglasses.
Later in the day she gave a glimpse of the tropical surroundings and the stunning sunsets.
It comes after Ashley and her radio co-presenter Amanda Holden ensured they got into the festive spirit as they shared a kiss under the mistletoe last Friday.
The duo could be seen locking lips in a snap shared to Amanda’s Instagram page in celebration of their last Heart Radio Breakfast Show before Christmas.
Britain’s Got Talent judge Amanda, who presents the show alongside Jamie Theakston, 50, while Ashley appears as the showbiz reporter, thanked fans for their support, saying she and Ashley went out ‘with a bang.’
Sharing the picture of the pair kissing as well as one posing alongside Santa, Amanda wrote: ‘Well….. last show of the year and we went out with a bang.
‘#Merrychristmas to you all .. we appreciate you sticking with us and making @thisisheart the biggest commercial breakfast show in the UK and Europe!! We couldn’t do it without you.
‘I kissed an #Elf and I liked it ❤️.’