Famous couple make rare appearance as they step out in Malibu for the annual Chili Cook-Off – do you know who they are?

A celebrity Australian chef was spotted out and about incognito in Malibu on Monday, where he partied with his American wife.

Curtis Stone and actress Lindsay Price enjoyed a sunny day at the annual Labor Day Chili Cook-Off in California, where the celebrity chef moved 17 years ago.

The pair were unrecognizable as they kept a low profile at the beloved event where delicious chili recipes are served each year.

Coles ambassador Curtis, 48, kept his face hidden under a large straw hat and wore a grey T-shirt and black jeans for the occasion.

Meanwhile, his 47-year-old Beverly Hills 90210 star partner sparkled in a very beachy white knit dress.

She kept her own straw hat hanging from her arm and opted for a minimal makeup look, as her brunette bob accentuated her genetically blessed features.

Curtis and his lover appeared to be enjoying a cool drink together as they chatted around a table.

It comes just a few months after Curtis shared a sweet tribute to his wife Lindsay on their 11th wedding anniversary.

The MasterChef judge celebrated their joint milestone on Instagram in June, posting photos from the day they tied the knot.

Curtis also joked in the caption that the couple renewed their vows last year to celebrate their 10th wedding anniversary.

“I love this woman so much I married her more than once,” Curtis told his followers in the post.

The couple looked unrecognizable as they kept a low profile at the beloved event where delicious chili recipes are showcased each year

He added: ‘Cheers to 11 years and a lifetime more. I love you so much, darling!’

“I love your hot lunch. Happy anniversary,” Lindsay posted in response to her husband’s tribute.

Curtis added photos from the couple’s glamorous wedding in Mallorca, Spain.

Lindsay looked radiant in the photos, which showed off her gorgeous classic white dress, while Curtis looked stylish in a black wedding suit.