Michelle Bridges welcomes baby boy with Steve 'Commando' Willis

Michelle Bridges and partner Steve 'Commando' Willis have welcomed their first baby together WHO can confirm.

The Biggest Loser trainer announced the news on her Instagram account on Tuesday, revealing she gave birth to her first child on Saturday.

The Instagram post read: "We are thrilled to welcome our little boy into the world, Axel Bridges Willis born 19/12/15. Healthy and happy".

"Thank you for all the messages of love,” Bridges commented in the caption.

To which Willis added: “Thank you to everyone for all your well wishes.”

Michelle Bridges confirms the news on Instagram

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Commando's manager has also confirmed the arrival with WHO.

Bridges, 45, first revealed her exciting baby news with WHO back in July when she was four months pregnant, sharing: "Now is the perfect time," she said.

The couple's baby boy is Bridges' first and Willis' fourth child, but first with the fitness star.

Did Bridges hint at her son's name when she posted this on Instagram?

The soon-to-be mother may have hinted she and Commando were set to name their son Axel when she posted a photo wearing a Guns N Roses T-shirt a week before the baby's arrival while assembling the cot.

"We did it! A bit of guns and roses music and it flew by! Love my @stokkebaby crib ... über cool," she wrote on Instagram.

Axel Rose is the lead vocalist of the American rock band Guns N Roses.

No images of newborn Axel Bridges Willis have been revealed at this stage.

Congratulations Michelle and Commando!

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Michelle Bridges and Steve 'Commando' Willis. Photo: Getty

Michelle Bridges. Photo: Instagram