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Celebrity crushes of the 2000s: Then and now

Photos Logo Photos | Slide 1 of 80: The WB Network's 2004 All Star Summer Party - Arrivals
Zac Efron (Photo by Albert L. Ortega/WireImage); NEW YORK, NY - MAY 22: Zac Efron attends The Cinema Society with Hugo by Hugo Boss, Women's Health & SVEDKA host a screening of 'Baywatch' at Landmark Sunshine Cinema on May 22, 2017 in New York City. (Photo by Paul Bruinooge/Patrick McMullan via Getty Images)

We take a  look at Zac Efron, Emma Watson, Milo Ventimiglia, Orlando Bloom, Mischa Barton and other heartthrobs of the 2000s, and how they have changed over the years.

Here's Zac Efron in 2004 and 2017.

© Albert L. Ortega/WireImage/Getty Images; Paul Bruinooge/Patrick McMullan via Getty Images
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