Scarlett Johansson has lashed out at "ridiculous" reports she has shed 14 pounds in weight for her role in Iron Man 2 - insisting she couldn't lose that much if she tried.

The 25-year-old star admits she slimmed down to squeeze into a cat-suit to play Black Widow in the forthcoming sequel.

However, Johansson is outraged over reports she went to extreme lengths to lose weight for the part.

She tells Glamour magazine, "There was this rumor mill cranking out stories that I had lost 14 pounds - I could never lose 14 pounds. I hate seeing these ridiculous articles where (tabloids) guess someone's weight."

Nevertheless, the actress admits her fame has made her more self-conscious about her curvy figure.

She adds, "I have a tumultuous relationship with it because I love to get ready for the red carpet, but being on it is very uncomfortable. It's so freakish and weird. I get flop sweats, dry mouth, heart palpitations, allover panic!"

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(This news article provided by World Entertainment News Network)