The mother-of-one shared this selfie to Instagram showing herself posing up a storm in a pretty yellow halterneck bikini with embellished blue jewel details.
Love the look? You can snap up this exact two-piece from Bahimi.com. It's called the Mango Tango bikini and costs £40.
We also spy that gorgeous engagement ring in the picture!
Billie became engaged to businessman Greg Shepherd in the Maldives last year, a few months before they welcomed their first child together, daughter Nelly.
She told us in November: "We haven't made any improvements on the wedding plans, it's really bad. We've got so much going on at the minute but we are definitely going to get married! It's just finding the time. I reckon we're going to get Christmas and New Year out of the way and then from January we'll get really stuck into it.
"It'll definitely be quite lavish, it's got to be! And we're really unsure about the location. We're still considering abroad and also closer to home, but we're in two minds. Sam and Ferne McCann will definitely be my bridesmaids though, along with my cousins and nieces."
Now that TOWIE has wrapped for the season, the star has been enjoying some downtime with fiance Greg and their adorable daughter Nelly, who turned one earlier this month.
Ten reasons we want to be on TOWIE!