"People think we own all these dresses, but we borrow them!" the mother of two young children told Harper's Bazaar magazine.
"I can't afford to buy that stuff. There are certain things I splurge on, but it's very rare, especially when you have two kids and school tuition," she said. "I'm not a big high-end fashion shopper. I wish I could, but the truth is, things are just so expensive. Before [designer] Isabel Marant was a million dollars and famous, I used to go to her store in Paris and go crazy, it was so affordable."