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LAS VEGAS, NV - MAY 19: Madonna poses in the press room during the 2013 Billboard Music Awards at the MGM Grand Garden Arena on May 19, 2013 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)

Top 10 Most Powerful Stars

June 25, 2013

See where Oprah Winfrey, Taylor Swift, Justin Bieber, and more land on the 2013 edition of Forbes's annual Celebrity 100 list.