The reality TV star, 24, posted some new pictures on Twitter (13 September) that made us all feel well jel!
Not only does it look like Billie had a blast, but she also looks smokin' hot just two months after giving birth.
In one poolside picture with her friend Saffron Lempriere and mum Suzanne, a smiling Billie looks stunning in a Baywatch-esque red swimsuit. No signs of any post-baby stretch marks on Billie's skin, that's for sure!
Alongside the picture, Billie wrote: "Me, @slempriere and mumma celebrating my Engagement in #Marbs #oceanclub #holiday #fun."
In a fun-filled shot from the engagement party, Billie is wearing an electric blue halterneck dress as she poses for a picture with friend Francesca Kelly.
After clearly having the time of her life, Billie took to Twitter to thank all those who flew to the Spanish resort to help her and fiancé Greg Shepherd celebrate their engagement.
She said: "Had the most amazing holiday and engagement party... Thank you to all of my lovely friends and family who made it so special."
She also gave a "huge thank you" to singer Luke Burr "for coming all the way to Marbs to sing at our engagement party... You was amazing!!"
Billie, who proved critics wrong when she took her two-month-old daughter Nelly to Marbs with her, also shared a brand new, super-cute snap of her baby daughter.
Posting the adorable black and white snap of the sleeping babe, proud mum Billie wrote: "My beautiful baby…"
We couldn't agree more!
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