Natalie starred on last year's series of The Apprentice, alongside Leah Totton and Luisa Zissman, and welcomed a baby daughter less than three weeks ago.
The businesswoman and her husband Oliver Reynolds have named their little girl Mimi Grace and now shared an adorable photograph of her on Instagram.
Alongside the snap, which was posted this morning (1 August), Natalie said: "My angel at 18 days old, cuddling mummy's peanut monkey xxx #love #babygirl #peanutmonkey #mimigrace #soinlove."
Natalie managed seven weeks in the BBC show last summer before she was fired by Lord Alan Sugar, and she has since gone on to launch her own fashion line, Panya London, with her sister Lexi.
Last October, Natalie married Oliver in Hertfordshire and they were joined on their big day by Leah and Luisa.
In fact, Luisa even made the couple's wedding cake.
Congratulations on your new arrival, guys!
Celebrities who have welcomed babies in 2014:
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