Sienna Miller sunbathing topless

Sienna Miller's has been photographed sunbathing topless on a Mexican beach
with her new love model Jamie Burke.
The young pair were seen kissing and cuddling up during a holiday on the
coast of Mexico, confirming rumors they are an item.

An onlooker said: "They were like a couple of love-struck teenagers."

Sienna Miller insists she has no shame about baring her breasts while on holiday because it is a natural thing to do.

'I'm not saying it is necessary all the time,' she says, 'but I'm a European and I have a European mentality about these things.'

'If I go to a beach, I don't wear a top. I would find it strange,' she explains.

Jamie, 21, is the son of a millionaire and has been romantically linked to
Lindsay Lohan, Kate Moss and Courtney Love.
Sienna, 25, split from on-off lover Jude Law for good late last year. Their
relationship hit the rocks in 2005 when it emerged Jude had been having an
affair with his children's nanny.

While shooting 'Factory Girl', it was reported that Sienna was romancing her
co-star Hayden Christensen.
In the film, in which Sienna plays artist Andy Warhol's tragic muse Edie
Sedgwick, the pair's sex scenes are so realistic they sparked speculation
Sienna and Hayden romped for real.

Sienna denied the claims, saying: “We’re making a film about real people having real sex. So the film’s making tons of money, but it’s not a real sex scene.

“I’m not going to have sex in front of 20 people on set!�

Sienna and Jamie were spotted kissing earlier this month at the Gramercy
Park Hotel in New York City.