Katherine Heigl has lashed out at critics who compare her to Julia Roberts, stating that it is “insulting”.

However, the 27 Dresses actress thinks the impact of such comparisons is more damaging to Roberts than to her.

She says, "I can't help but feel that's (the comparison) a little insulting to Julia Roberts.

The 29-year old goes on to gush about her admiration for the Pretty Woman star.

She adds: “There's not another woman who I look at and think, 'That's it, that's whose career I want to have.'

"I'm just me and trying to do the best I can in every decision in any given moment."