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Taylor Lautner

LOS ANGELES, CA - NOVEMBER 12: Actor Taylor Lautner arrives at "The Twilight Saga: Breaking Dawn - Part 2" Los Angeles premiere at Nokia Theatre L.A. Live on November 12, 2012 in Los Angeles, California. (Photo by Steve Granitz/WireImage)

'Twilight' Stars: Then and Now

The young cast of "Twilight" has really grown up since the first movie debuted four years ago. As fans prepare for the fifth and final installment of the vampire love story, which opens on November 16, let's take a look back at how they've changed.