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Jackson Rathbone

LOS ANGELES, CA - NOVEMBER 12: Jackson Rathbone at The World Premiere of Summit Entertainment, a Lionsgate Company, "The Twilight Saga: Breaking Dawn - Part 2" at Nokia Theatre L.A. Live on November 12, 2012 in Los Angeles, California. (Photo by Eric Charbonneau/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.