Margot Robbie is ''nervous'' about getting a skating injury on the set of 'I, Tonya'.

The 26-year-old star is playing American figure skater Tonya Harding - who was accused of organising for an attack to take place on her rival Nancy Kerrigan before the Winter Olympics in 1994 - is worried she'll push back production by getting an injury whilst on the ice.

She told Glamour magazine: ''I'm really excited because I'm producing the film as well, for the first time I have all of these other concerns that I normally don't think about when I'm just acting. Whereas now I'm so worried about getting injuries and ruining pushing shoot dates back, that'll cost hundreds of thousands of dollars - it's terrifying.

''So I'm really excited because I love acquiring a new skill for a role, it's one of the biggest treats of acting, and on the producing side of it - if I get an injury I'm scared I'm going to ruin everything so I'm nervous.''

And the 'Suicide Squad' star certainly isn't afraid of putting in the training for a movie role as it was previously revealed she worked out for three hours a day to prepare to play Harley Quinn.

Her trainer Andie Hecker said: ''She was a total trooper. It was very satisfying to see her body change into exactly what she wanted it to look like in such a short time ... There's a scene in 'Suicide Squad' where she changes clothes in front of a bunch of dudes, so her abs needed to be impeccable. And in those tiny shorts Harley wears, her butt was constantly on display.''