The Biggest Loser’s Steve ‘Commando’ Willis and trainer girlfriend Harika Vancuylenberg show off their fit forms during Boxing Day stroll in Sydney

Steve 'Commando' Willis enjoyed a warm Boxing Day stroll around eastern Sydney.

The Biggest Loser star was joined by his girlfriend Harika Vancuylenberg, the fellow personal trainers putting their fit figures on display.

Steve, 47, was shirtless, his ripped physique on display, and wearing blue board shorts.

He added a bucket hat with a white logo on the front and sunglasses that shielded his famous face.

Steve completed the look with a pair of black sneakers and socks in a matching shade.

Harika opted for a pink bikini top with a blue print paired with black short shorts.

Her toned abs were on display as she wore a pair of black and white sneakers and chic sunglasses.

The brunette appeared to have minimal makeup and wore her hair in a sleek ponytail.

The couple appeared relaxed and in love as they walked hand in hand along the beach.

Willis shot to fame on The Biggest Loser in 2007 when the former soldier found love with co-star Michelle Bridges.

Prior to their 2020 split, the former power couple built a fitness empire together, publishing books like Commando Steve: No Excuses and Get Commando Fit — and even starring in a season of Australian Survivor.

But following his divorce from Bridges and departure from The Biggest Loser in 2015, 47-year-old Willis largely disappeared from the public eye, leaving fans wondering what he is up to these days.

Although Commando is no longer on primetime television, he is still a major player in the fitness industry.

He currently runs his own gym in Sydney called Get Commando Fit, in addition to working as a personal trainer and offering online classes.

Willis also has a children's fitness program called Commando Kids and organizes his own grueling fitness camps.

His personal life also flourished and found love with former F45 trainer Vancuylenberg.

The couple apparently met in November 2019 when Harika attended one of Steve's fitness retreats in Tahiti, and confirmed their relationship in July 2020.

Harika now helps run Steve's fitness empire and represents the gym in fitness competitions across Australia.

Although things are going well for the couple, they have both ruled out having children together.

Willis is already the father of four children, including son Axel with ex Michelle, while Harika has two children of her own.

Michelle and Commando first met while filming The Biggest Loser together and welcomed Axel in 2015, before they both quit the series.