Earlier this month, McFly star Tom and his wife Giovanna - Mario's sister - welcomed their baby boy into the world and, we have to say, he's a right cutie.
Since Buzz's birth, Mario got stuck into the role of dutiful uncle and is very much looking forward to cuddles with his baby nephew this Easter weekend.
Sharing the latest picture of the gorgeous tot on Twitter last night, Mario told his followers: "2 more days and I get to cuddle this handsome little man!"
Last week, Mario shared more pictures of himself and Buzz enjoying snuggles together.
He also tweeted: "Very proud uncle!! I love him."
Following his birth, Tom and Giovanna shared a touching video of Buzz, which took fans on a journey through pregnancy to his arrival.
What a cute family!
Celebrities who have welcomed babies in 2014:
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