The reality star has been engaged to businessman Greg Shepherd since last year, when he proposed during a romantic holiday to the Maldives.
Speaking to Daily Star's TV Extra, she said: "We still haven't made any plans. I originally wanted a huge wedding but now we're thinking of having a small ceremony with family and close friends, potentially abroad."
Billie, 25, has to fit wedding planning around her commitments on The Only Way Is Essex, and caring for daughter Nelly, one.
And if Billie has her own way, there could be another baby in the house by the time the big day arrives!"
"I want to have another relatively soon, so that the new baby and Nelly can be close to each other in age – like [my sister] Sam and I."
Sam, 24, is pregnant with her first child with boyfriend Paul Knightley, and Billie is thrilled for the parents-to-be. "Sam will be a great mum. She's a natural with Nelly. And Nelly really likes Sam's boyfriend, Paul, too."
After Sam and Paul confirmed the baby news, sister Billie took to Instagram to send a public congratulations.
She said: "Congratulations to my beautiful sister Sam and Paul. I can't explain my happiness and excitement for you both.
"We are going to have so much fun with our beautiful babies and Nelly Noo is going to have a cousin to play with. Eeeeeeekkkk. Very proud of you. Life is just about to begin sister!!! Love you so much."
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