By Marianne Mychaskiw
Updated Apr 12, 2013 @ 1:30 pm
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Credit: Taylor Hill/Getty; Jon Kopaloff/FilmMagic (2); David Maree/startraksphoto.com

Did we miss the hair makeover memo? This week, Coco Rocha, Michelle Trachtenberg, Nikki Reed, and Justin Bieber kept their hairstylists busy by making serious changes to their strands! While Rocha and Trachtenberg unveiled new red hues, Reed and Bieber went for drastic cuts. Click the image to take a closer look at each of their styles now!