Pamela Anderson stunned onlookers when she arrived at a prestigious art fair wearing just a T-shirt and underwear.

The 41-year-old star - who has two sons with ex-husband Tommy Lee - seemed unaware of the controversy she was causing at the Art Basel Miami Beach fair, and later posed for photographs bending over paintings with her butt in the air.

An onlooker said: "It was unbelievable. Her outfit was more suited to a party at the Playboy mansion than an important art event."

Pamela accessorised her orange and black underwear and grey T-shirt with patent pink shoes and a Campbell's Soup clutch handbag - paying tribute to revolutionary 60's artist Andy Warhol.

Other celebrities at the Florida event included Paris Hilton, who joined Pamela to look at 'Jesus Is My Homeboy', an exhibition featuring the work of photographer and movie director David LaChapelle.

As David showed the famous pair around his work, Pamela eagerly reached out to hug a photograph of herself.