The smitten mum welcomed her daughter Arabella on October 25.
This is the 28-year-old's first child with her current boyfriend, who she has been seeing for over a year but has never named in the press. She has two other children, nine-year-old Lillie May and seven-year-old Karl, from a previous relationship.
Rebecca shared an beautiful picture of her newest little one on Instagram today, looking gorgeous in a dusky pink dress.
The photo was captioned, "She is just adorable my little dolly girl."
A few days after Arabella was born last month, Rebecca took to Instagram to share a sweet sneak peek, telling followers that she was "absolutely head over heels madly in love" and "unbelievably grateful."
We're delighted to hear the doting mum is doing well!
