In 2010, Kelly Osbourne did something drastic—she dyed her hair a shocking shade of lavender. The reception wasn't the warmest, but Osbourne didn't give a damn. “I was barraged for two years for dyeing my hair this color,” she tells us. “But I knew that it made me truly happy, and that’s all that mattered.” This “stand up to the naysayers” mentality is something she applied to all aspects of her life—from career to relationships and, of course, her fashion and beauty choices. It has served her well, too, helping her launch her own clothing line, a gig on E!’s buzzy Fashion Police, and a just-announced role as a judge on Lifetime’s new series, Project Runway Junior. Osbourne's rebel spirit—the very one people loved to criticize—was the very thing that led to her unexpected new role: a trendsetter. (FYI: Pastel hair is officially cool now.)