Tiffiny Hall and Ed Kavalee welcome their first child, a boy named Arnold

TIFFINY Hall and Ed Kavalee have welcomed the birth of their first child, a boy.

Tiffiny Hall and Ed Kavalee's newborn son, Arnold Martin Kavalee.

TIFFINY Hall and Ed Kavalee have welcomed the birth of their first child, a boy.

The former Biggest Loser trainer and her actor/ radio host husband shared the news on Instagram this afternoon, revealing they had named him Arnold Martin Kavalee, with Martin the name of Hall’s father.

A source close to the couple said Hall gave birth on Monday morning and she and Ed were both doing “amazingly well”.

“She did say he looks a lot like Ed. Except he’s very blond,” the source said. “They are in a baby bubble at the moment.”

Kavalee was absent from his Triple M breakfast show in Brisbane yesterday morning with Lawrence Mooney stepping in to fill his shoes.

Hall and Kavalee tied the knot in 2014.