The former TOWIE star and her footballer fiancé Andy Carroll will welcome their first child together soon – but while they know the sex, they haven't let anyone else in on the big secret!
And that's tricky!
After taking delivery of a new pram over the weekend, excited Billi couldn't help saying: "Just a little excited! Boy? Or girl? Not sure how much longer I can keep it a secret!"
Whether it's a baby boy or girl, it's clear that Billi's tot will be one seriously well dressed celebrity baby. She also Instagrammed a picture of teeny tiny slippers emblazoned with a crown symbol for her little prince or princess.
It will also be a very well chauffeured baby as Billi told us earlier this year she already had three prams before taking delivery of this one!
Billi's just back in the UK after enjoying a babymoon to sunny Dubai, celebrating her last holiday before she becomes a mother.
The starlet and fiancé Andy announced the pregnancy on Christmas Day, sharing the news via a picture of Billi wearing a Christmas jumper with the words: "Making my little pudding."
Check out some of the best maternity fashion below: