Sarah Jessica Parker has damaged her feet from wearing uncomfortable shoes.

The 47-year-old actress no longer tries to cut down on wearing high heels after she accidentally ''created'' extra bones in her feet from getting into character for 2011 film, 'I Don't Know How She Does It'.

Recalling her time on set, where she claimed she wore cheap shoes for up to 18 hours a day, Sarah explained: ''I wore beautiful shoes, and never complained. But then I did 'I Don't Know How She Does It', and I was very thoughtful about my whole wardrobe and said you know, [my character, Kate Reddy] could not afford really good shoes, she would go to Nine West or Aldo.

''So I got shoes from there and the bottom of the shoes aren't leather, they are plastic, so I slipped a couple times, twisted my ankle.

''I went to a foot doctor and he said, 'Your foot does things it shouldn't be able to do. That bone there ... You've created that bone. It doesn't belong there.'

The 'Sex and the City' star - who has children James Wilkie, 10, and three-year-old twins Tabitha and Loretta with husband Matthew Broderick - is ''sad'' at the harm she has done to her feet over the years, but admits she saw it coming.

She added to Net-A-Porter magazine: ''It's sad, because my feet took me all over the world, but eventually they were like, 'You know what, we are really tired, can you just stop - and don't put cheap shoes on us?' ''