London, March 15 (IANS) Donna Simpson, who wears XXXXXXXL dresses, aims to be the fattest woman in the world. She says sushi is her favourite food, 'but unlike others I can sit and eat 70 big pieces of sushi in one go'.

Donna Simpson, 42, from New Jersey, is determined to reach the 1,000lb mark (about 450 kg) in two years, the Daily Mail reported.

Simpson already holds the Guinness World Record as the world's fattest mother and consumes nearly 12,000 calories a day in an effort to be the world's fattest woman.

'My favourite food is sushi, but unlike others I can sit and eat 70 big pieces of sushi in one go.

'I do love cakes and sweet things, doughnuts are my favourite,' Simpson was quoted as saying.

Simpson eats a lot of junk food and tries to move as little as possible.

'I'd love to be 1,000lb (about 450 kg),' she said, adding: 'It might be hard though. Running after my daughter keeps my weight down.'

To fund the $750 weekly food cost, she runs a website where men pay her to watch her eat fast food.

Between the ages 14 and 18 she lost weight, but was unhappy.

'Dieting just made me miserable because I was thinking about food all the time,' she said.

She went on to say that she loves eating and 'people love watching me eat'.

'It makes people happy, and I'm not harming anyone.'