ScarlettWeightLoss.jpgScarlett Johansson is squashing the rumors that she's undertaken a crash diet to get into shape for her upcoming role as Black Widow in Iron Man 2.

Dismissing rumors that she's using Gwyneth Paltrow's personal trainer or on some "miracle diet," ScarJo says she's been working out at least 30 minutes a day and eating a balanced diet of fruit, vegetables and lean proteins.

The formerly curvy Lost In Translation star writes on The Huffington Post that, “the idea that the media would maintain that I have lost an impossible amount of weight by some sort of 'crash diet' or miracle workout is ludicrous.”

Scarlett also denies that she's lost 14 pounds. "If I were to lose 14 pounds, I'd have to part with both arms. And a foot," ScarJo writes.

The actress says she's speaking out because she doesn't want "some 15-year-old girl in Kansas City (to) read one of these 'articles' and decide she wasn't going to eat for a couple of weeks so she too could 'crash diet' and look like Scarlett Johansson."