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6. Judd Apatow Made Her Dye Her Hair Red

We all have famed film producer Judd Apatow to thank for Stone's now-signature red hair. He was the one who convinced her to ditch her brunette locks back in 2007 for her role in Superbad. "Judd made me a redhead," she explained in 2010. “I was a brunette during casting. Then Judd walked in, said 'Make it red,’ and walked out. So he made me this way.”