Kerr, the girlfriend of Hollywood heart-throb Orlando Bloom, has revealed there are parts of her body she doesn't like.
And she said she worked extra hard at the gym to try to fix the problem.
"Nobody is perfect," she told Britain's The Sun newspaper. "I have my good parts but I also have those parts I need to work on, but that's between me and my personal trainer."
Kerr weighed into the body image debate sparked by Jennifer Hawkins by saying all women, regardless of their shape and size, had to feel confident within themselves.
"I think the important thing is that all women are happy and confident with what they have got and don't feel pushed to being a certain way," the Victoria's Secret model said.