The 42-year-old from New Jersey, U.S, is set on reaching the 1,000lb mark (71st) in just two years. Remarkably she insists she is healthy, despite now needing a mobility scooter when she goes shopping.
Donna, who wears XXXXXXXL dresses, eats mounds of junk food and tries to move as little as possible. Ms Simpson already holds the Guinness World Record as the world's biggest mother, when she gave birth in 2007 weighing 38stone.
She needed a team of 30 medics to deliver her daughter Jacqueline during a high-risk Caesarean birth. Yet although she can only move 20ft before needing to sit down, she wants to be even bigger.
To achieve her goal, Donna says she will need to eat up to 12,000 calories a day (the average woman should consume only 2,000.) To fund the massive $750 weekly food shop, she runs a website where men pay her to watch her eat fast food.
By the age of 31, she weighed 43 stone and decided to try and lose weight. She lost five stones in six months and was due to have a gastric band operation.
