25. Hilary Duff
Hillary Duff did a great job with her change. As she aged, she had her teeth fixed up to the point that they seemed to mature with her. As a child star, she had the teeth you would expect, but as a beautiful adult, she has nothing but a perfect smile with teeth to match. While the changes aren’t drastic, it is a safe bet that work was done to create an even and perfect line across her smile, and she seems to have even more confidence because of it.