Danni announced the news on Twitter this evening (15 July), saying she and partner Fabian are overcome with happiness.
In a tweet to fans, the new mum wrote: "Me and Fabian are very happy to announce the birth of our beautiful baby girl. We could not be happier."
Alongside her message, Danni posted cute emoticons of baby faces and little pink hearts. Aww!
Restaurant owner Danni only announced her pregnancy when she was eight months gone and preparing to throw a baby shower.
At the time, she said: "Can't believe it's actually my baby shower today. The last 8 months have gone so quickly can't wait to meet my bubba."
Danni then continued to keep fans updated with lots of bump photos and even had a special cast done of her pregnant tummy to remember it by.
Last week, having gone overdue, Danni took to extreme measures to get her baby girl moving - she spent the evening bouncing up and down on a gym ball!
Congratulations, Danni and Fabian!
Meanwhile, Danni isn't the only TOWIE star to have given birth in the last week.
On Thursday, Reveal broke the news that Billie Faiers and her fiancé Greg Shepherd had also welcomed a baby girl into the world.
The couple are thrilled with their new arrival, although they are yet to choose a name for her.
Celebrities who have welcomed babies in 2014:
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