Megan Fox fears she's not 'big enough' to play busty superhero

London, Sept 29 : American actress Megan Fox fears she is not "big enough" to play the part of a big-breasted superhero.

Sources have revealed that the 22-year-old, who has signed on to play the role of alien babe Aspen Matthews in the much-awaited movie Fathom, fears that she will not be able to live up to the image depicted in the cult comic.

According to them, the 'Transformers' star studied the comics, and came to the conclusion that she would not be able to look like Matthews, who has been drawn with huge boobs that barely fit into the ultra-tight swimsuits.

"She was really excited about the part but she's now worried that she hasn't got the boobs to satisfy the fans," the Daily Star quoted a source as saying.

"The Fathom comics have a huge fan base of teenage boys and to them Aspen is a goddess.

"Megan is panicking about being big enough to impress them," the source added.

Fox, who had faced claims in the past that she has already enhanced her 34B boobs, might just be tempted to go in for surgery to make them bigger, an insider said.

ANI