Billie, 26, is already mum to daughter Nelly, who celebrates her second birthday in July, and told us she's ready to add to her family.
In this week's issue of Reveal, Billie says: "I definitely want another baby, sooner rather than later. I'm really hoping to get pregnant at some point this year, so we've put the wedding back."
Billie has been engaged to businessman Greg Shepherd since February 2014, when he popped the question during a romantic holiday in the Maldives.
Their daughter Nelly arrived that July.
"We're having another baby so I want to take time to get back into," said Billie. "The baby will be my priority so I don't want to be to be stressed organising a wedding."
Billie's co-star Bobby Cole Norris recently predicted a baby announcement would be happening later this year, writing in his recent Reveal mag column: "I still predict Billie will be expecting baby #2 by Christmas…"
Pick up this week's issue of Reveal magazine, in shops now, for more about Billie's baby and marriage plans, and what she has to say about her most recent bikini pictures…