Rachel Hunter has hit out of critics of her 'fat' Celebrity Circus picture, insisting 'I don't look like that'.

The New Zealand model's fuller figure has been attracting attention over the last few weeks, after she bulked up while appearing on reality TV show Celebrity Circus.

An unflattering image of Hunter in her circus outfit prompted speculation she had gained a lot of weight and critics had described her as 'chunky' and 'bloated'.

An angry Hunter said: 'I don't give a s**t. If people say that, then they can deal with the consequences because they look stupid.

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'It (the circus photo) was taken days ago and unless I've done something drastic I really don't think I look like that. That's their problem. They've totally misconstrued exactly how I am.'

When asked about her dress size or weight, Hunter said: ' I don't know. I really don't care.'

Arriving at the Science Museum in South Kensington, London on Thursday, Hunter laughed off reports she had put on weight by showing off her toned legs in a black mini-dress.

As if to prove a point, the 38-year-old looked decidedly overdressed for a day at the science museum.

Dressed in four inch slingback heels, short mini-dress and wrapped in a pashmina, Hunter looked certain to out-glam any geeks at the museum.

Lady in black: Fresh from LA, Rachel Hunter arrives for a glamorous, solo trip to the Science Museum

Her sexy appearance was a far cry from her dressed-down look in Los Angeles a day previously.

Spotted in LA on Wednesday, a casually-dressed Hunter visited a pharmacy with bandages covering her knees - perhaps covering an injury sustained on Celebrity Circus.

Hunter recently complained that she had put on weight in muscle when she learned trapeze and other circus skills on the reality show.

She was voted off the U.S. show in its fifth week last week.

The 5ft 10in model's weight has fluctuated over the years. She was at her heaviest at 11 stone following the birth of her second child, Liam who is now 13.

She then followed a gruelling diet and rigorous exercise regime to shed the weight.

Her reward was to become the face and body of underwear brand Ultimo - replacing ex-husband's Rod Stewart's latest wife Penny Lancaster.

Toned: A slimmer Rachel Hunter at an Ultimo underwear launch in 2004