Former TOWIE star Sam announced her exciting news on Instagram this afternoon (30 December), alongside a snap of her little bundle.
The picture shows both the reality star and boyfriend Paul Knightley holding on to their son's tiny hand.
The couple welcomed him into the world yesterday (29 December) but are yet to reveal his name or birth weight.
Alongside the photo, Sam says: "Welcome to the world our beautiful baby boy. 29.12.15."
Essex girl Sam, 24, has been in a relationship with property developer Paul since October 2014 and they announced their exciting pregnancy news in August.
Soon after, Sam and Paul enjoyed a romantic baby-moon to the Maldives ahead of their little one's arrival.
Throughout her pregnancy, Sam has kept fans updated with lots of baby bump selfies and it's fair to say she has looked simply glowing.
This morning, Sam told fans it is her 25th birthday tomorrow. What an amazing present!