The 26-year-old and her West Ham striker boyfriend, also 26, travelled to Dubai for their babymoon, and she flaunted her blossoming bump on Instagram.
Former TOWIE star Billi, who is thought to be due in around nine weeks, posted an adorable snap of the two of them standing in the sea, with Andy cradling her bump.
She captioned it: “Before two becomes three.”
The trip to Dubai also marked 30 weeks into Billi’s pregnancy. Wearing a gorgeous purple bikini, the yoga instructor posed on the beach with ‘Baby Carroll 30 weeks’ written in the sand.
Billi and Andy have since returned home and are excitedly awaiting their bundle of joy. Last week she shared a series of pictures including the pram, some cute baby slippers and the crib.
But the couple are keeping their baby’s gender a secret. Posing next to the pram, Billi wrote: “Just a little excited. Boy? or Girl? Not sure how much longer I can keep it a secret!”
Billi and Andy announced their engagement last November, and shared the happy news that they were expecting on Christmas Day.
Andy is already dad to son Lucas, two, and four-year-old daughter Emilie Rose.