Photo SpecialSexier with Age!

Check out Patrick Dempsey, Brad Pitt and 9 other stars who've only gotten better with time. By Emily Fromm

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JOAQUIN PHOENIX

In his breakout role in 1995's To Die For (left), Phoenix was still best known as the younger brother of the late actor River. Now, playing Johnny Cash in the upcoming Walk the Line, Phoenix, 31, has finally arrived as a leading man – and a thinking woman's heartthrob. "Joaquin is absolutely stunning and a brilliant actor," says singer Charlotte Church. "He seems like a bit of an introvert, and I just think that is so cool."

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