The former 'EastEnders' actor and his partner of 11 years, whom he married in November last year, are said to have welcomed their third child, according to OK! Online.
The couple, who already have nine-year-old daughter India and four-year-old son Elvis together, were thrilled to announce they were expecting another child in July.
Gary said at the time: "I was really excited when I found out."
However, Natasha, who was already several months pregnant when they decided to reveal their happy news, admitted they hadn't planned to have another baby just yet.
She said: "It was actually a bit of a surprise because although we've discussed having more children, it wasn't exactly planned.
"But it's like something's been gifted to us, it's the best wedding present ever. It's like it was meant to be."
Gary and Natasha also revealed Elvis was thrilled at the prospect of having a little sister as well as an older one.
Natasha shared: ""He keeps talking about how he's going to be a big brother and look after his little sister, which is really nice to hear."
And although their new daughter wasn't planned, the couple have confessed they'd like one more child to complete their brood.
Natasha added: "Two boys and two girls would be perfect, especially for Elvis to have another boy around when he's a bit older."