Mario was snapped while giving Buzz, who is his sister Giovanna and her McFly husband Tom Fletcher's son, a cuddle during a family night in on the weekend.
Proving his baby skills, the reality star even managed to hold the sleeping baby in one arm and take a selfie with the other!
Mario then posted the photo on Instagram and told his followers: "Buzz time! Chilled out family Friday in!"
Mario's sister Giovanna gave birth to Buzz on 13 March and she and Tom announced the news on Twitter, saying they were "thrilled".
TOWIE star Mario couldn't wait to give Buzz a cuddle and was pictured cradling the newborn soon after his arrival.
Nothing like a gorgeous baby and a handsome man to make your heart melt, eh?!
Celebrities who have welcomed babies in 2014:
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