9News presenter Peter Overton has met his littlest fan, a one-year-old called Mason who suffers from a rare heart defect.

He was born with Hypoplastic Left Heart Syndrome, which means half of his heart didn't form in utero.

However, Mason just “melts” at the sound of Overton's voice, and he loves watching the news.

His parents, Mick and Michelle, say that Mason lights up whenever he watches Overton on the nightly news, waving and smiling at the television.

The pair wrote into 2GB's radio presenter Ray Hadley, hoping to arrange a meet-and-greet between their son and Overton.

“I'm absolutely obsessed with my son he is the centre of my world and I would do anything to make him happy,” Michelle said in her letter.

As soon as Overton heard about Mason, he organised for him and his family to visit the Sydney studio to say hello.

“As soon as I saw it, I got straight in touch,” Overton told

Mason, much to Overton's delight, recognised him straight away.

“I met Mason in reception and he lit up, he came straight to me,” Overton said.

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“He is the most beautiful kid, we spent a lovely hour together.”

Overton also spoke to Ray Hadley and shared how the visit went.

“I wish my children lit up but Mason does.

“He's a brave little fella and I saw the scars he had from his last operation and he's got another one coming up.

“For everyone at 9News who met Mason, it reminded us all of how lucky we are.”

This article originally appeared on Over60.