NEW YORK, June 27 (UPI) -- U.S. media mogul Oprah Winfrey has topped Forbes' 2012-13 Most Powerful Celebrities list.
Rounding out the top tier are country music star Taylor Swift at No. 6, rock band Bon Jovi at No. 7, tennis player Roger Federer at No. 8, teen idol Justin Bieber at No. 9 and talk-show host Ellen Degeneres at No. 10.