One of Australia's best-known TV stars has made a big announcement with his wife, revealing the pair are expecting their first child.

Bondi Rescue lifeguard Trent Maxwell shared a series of photos to Instagram, with he and his hairstylist wife Tahlia embracing on the beach as she showed off her growing bump.

The photos were captioned: 'Baby Maxwell coming soon.'

Fans delighted in the news, with friends and fans racing to wish him congratulations.

'So excited for you guys,' one woman wrote.

'Two of the best about to be three.'

Trent and Tahlia, who have been together for 11 years, married in an intimate ceremony on Sydney's Northern Beaches in February 2020.

Shortly after the wedding, he told New Idea he was excited to become a father, and to pass down the advice he got from his own dad to his children. 

Bondi Rescue star Trent Maxwell has shared a major life update, announcing he is having a baby with wife Tahlia. Picture: Instagram

Bondi Rescue star Trent Maxwell has shared a major life update, announcing he is having a baby with wife Tahlia. Picture: Instagram

The couple have been together 11 years. Picture: Instagram

The couple have been together 11 years. Picture: Instagram

'He always told me, 'Be a hard worker, put your head down and don't complain, just dip in and get the job done.'' he said.

'My dad's a very hard worker and I'm very lucky that I follow his traits as a workaholic - good and bad, we're always working but I don't give in too easy and if I put my head down and my mind on something, I'll achieve it.'

Trent, known as 'Maxi' on the show, was the youngest-ever professional lifeguard to work on Sydney's famed Bondi Beach, and has appeared in 17 of the show's 18 seasons.

In 2016, he became a firefighter, and works out of Bankstown Fire Station in the city's south west.

Season 18 of Bondi Rescue started airing earlier this month. Picture: Instagram

Season 18 of Bondi Rescue started airing earlier this month. Picture: Instagram