The former Girls Aloud singer, 28, gave birth in February but up until now has kept her daughter under wraps.
Tonight though, she shared the adorable first snap of baby Anaiya.
In the picture, Nadine is tenderly kissing her baby girl on the cheek, and she posted with the caption: “Introducing Anaiya. Xx”
Anaiya is Nadine’s first child with her fiancé American football star Jason Bell, 36. The couple got together in 2008 and although they broke up briefly, it was reported at the beginning of this year that they were engaged.
At the beginning of the month, Nadine took to Twitter to tell her followers how she was finding motherhood.
She wrote: “She is a amazing thank you. I cry tears of joy at least once a day.
“I haven’t left her side since she was born. I tried to go out one day and broke my heart crying in the driveway. Maybe tomorrow…”
Although Nadine is the first member of Girls Aloud to have a baby, Kimberley Walsh recently revealed her own pregnancy.
Nadine sent her ex band mate her congratulations, posting: “Congratulations Miss Kimberley. I hope you love every second as much as I did. Xx”