"For ten or so years, I literally ran in heels. I worked 18-hour days and never took them off. I wore beautiful shoes, some better made than others, and never complained," she tells Net-A Porter Magazine
. "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 footwear. So I got [lower-priced] shoes and the bottoms weren'
t leather, they were 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.'"