DEMI MOORE

She hit the half-century mark on Nov. 11, but Moore has hardly aged a bit since her Brat Pack days. The secret to her eternal youth? "Moisturize, moisturize, moisturize," the former Mrs. Kutcher told Marie Claire. Coincidentally, Moore's St. Elmo's Fire co-stars Emilio Estevez, Andrew McCarthy and Ally Sheedy are also celebrating the big 5-0 this year!

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