They've jetted away for a family break before the birth of their third child.

And Billi Mucklow shared a glimpse of her growing bump in a stylish coral bikini as she played in the water with fiancé Andy Mucklow and their two sons Arlo, four, and Wolf, two.

The former TOWIE star, 32, was glowing in the two-piece as she larked about in the water with her 'cheeky' children in the snaps she shared on Instagram.

Billi and Andy, who have also jetted away with his daughter Emilie Rose, ten, and Lucas, eight, from a previous relationship, beamed as they enjoyed an afternoon of fun in the swimming pool.

The mother-to-be swept her blonde hair into a high bun as she cuddled her adorable, who flashed their own cheeky grins for the camera.

Another snap showed her boys and Newcastle United player Andy beaming during a day of fun in the swimming pool. 

She captioned one post: 'My Cheeky Chaps,' while for another she penned: 'My Water Babies.' 

Billi did not disclose the location of her family getaway, which comes just weeks before she is set to welcome her third child, a baby girl, with fiancé Andy.  

Announcing her pregnancy in November, Billi, who has been engaged to sportsman Andy since November 2014, captioned the black-and-white image: 'Here We Go Again! @andytcarroll - #TeamCarroll #5Aside #LoveMyBabies.' [sic]  

Billi and Andy have been together for many years, and became engaged nearly six years ago when he got down on one knee in Rome, Italy.

While nothing appears to have been arranged, the blonde had previously revealed that the couple were planning to wed in the summer of 2017.

Speaking to OK! magazine at the time, she said: 'I wanted to spend a few months enjoying Arlo as a baby before we started getting busy with wedding stuff. I definitely want a massive wedding, though.'