Billie was whisked away to France by Greg earlier this week to celebrate her birthday and they have had a fantastic time sightseeing, hitting the shops and eating yummy food.
The couple, who are expecting their first baby together in June, have also visited one of Paris' love lock bridges - which is covered in romantic personalised padlocks.
Billie and Greg added their own special padlock to the bridge to mark the love they have for each other and their unborn child.
Using a blue marker pen on the gold lock, the cute parents-to-be wrote: "Billie, Greg + Bump 15/10/14."
Billie then Instagrammed a picture, saying: "And it's on!!! Locked on forever... #paris #lovelockbridge x"
Meanwhile, Greg bought Billie a new pair of mega Gucci heels (we wonder if she'll still manage to wear them in five months time!) and treated her to a delicious hot chocolate, which came in its own pot.
Sadly though, all good things come to an end.
Earlier today, alongside a picture of herself and Greg, Billie commented: "Had the most lovely time in Paris ... Nearly time to come home x."
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