Lady Gaga and Oprah Winfrey Among World's Most Powerful Women—See Where They Rank

Lady Gaga and Oprah Winfrey Among World's Most Powerful Women—See Where They Rank: Apparently, Mother Monster is no match when it comes to a certain media mogul.

Oprah Winfrey just landed on Forbes' 9th annual World's 100 Most Powerful Women, ranking higher...