Megan Fox Transforms figure for film
Megan Fox was the "fattest ever" when she filmed 'Transformers: Revenge of the Fallen', because director Michael Bay doesn't like working with thin actresses
Megan Fox gained weight to impress Michael Bay with her curves.
The 'Transformers: Revenge of the Fallen' star deliberately tried to fatten up before working on the comic book action movies because the 44-year-old director prefers women who are a healthy weight.
She said: "Mike doesn't like really skinny actresses. He's been traumatised by them for some reason in the past. So I always try to put on 8-10lbs before. I'm always the fattest I've ever been when making a 'Transformers' movie."
But the 22-year-old beauty - who is dating 'Beverly Hills, 90210' star Brian Austin Green - insists she has a carefree approach to dieting.
She added: "Anyway, my weight fluctuates constantly - I don't really take good care of myself. I just sort of exist and survive."
Megan is not the only Hollywood actress who has put on weight for a movie role.
Renee Zellweger went from a dress size six to a 14 in preparation for the 'Bridget Jones' films, while Oscar-winning actress Charlize Theron gained 28lbs for her role in 'Monster'.