Emma Stone went back to her roots. The 28-year-old actress graces the cover of the September issue of Marie Claire magazine, and she went back to her naturally blonde roots for the high-fashion photo shoot. Stone portrays Billie Jean King in the upcoming "Battle of the Sexes," which tells the true story of the 1973 tennis match between King and ex-champ Bobby Riggs, played by Steve Carell. Stone confided in the magazine, "There is so much power to our voices, and we need to speak out That's something that I struggled with in the past, but it's very hard not to feel galvanized right now, politically or consciously." "Battle of the Sexes" hits theaters September 22nd.