Nine Network reporter Sylvia Jeffreys has announced the birth of a baby boy, Oscar Hamilton Stefanovic.

Weighing in at 3.4kgs, baby Oscar is the first child for both Jeffreys and husband Peter Stefanovic.

“Deep blue eyes and perfectly healthy. He’s absolute magic,” Jeffreys captioned the new photo of her baby.

Oscar’s uncle, Karl Stefanovic, acknowledged the good news while hosting Today on Nine this morning.

“This is magnificent news. My gorgeous brother Pete and my even more gorgeous sister-in-law Sylvia have welcomed a beautiful little boy into the world,” he said.

“Makes you wants to cry... Just like his uncle, has a massive—”

“Personality,” Today co-host Ally Langdon interjected.”

Sylvia says that they are completely smitten. Love to you here and all of us from the Today Show. Well done Sylvia, that is a gorgeous, gorgeous creation,” Karl continued.

Peter Stefanovic is thrilled as well, sharing the news with his Instagram followers with a cheeky caption.

“We’ve got our own Oscar! I’m so unbelievably proud of @sylviajeffreys and our new best mate. Love is strong. Life is fantastic,” he wrote.