Lady Gaga And Oprah Winfrey Miongoni mwa Wanawake 100 Wenye Nguvu Duniani

The 'Oprah's Next Chapter' host and the 'Born This Way' hitmaker are ranked higher than any other celebrities by claiming the eleventh and fourteenth spots.

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Who is the most powerful woman in the world? According to Forbes, Oprah Winfrey is the highest-ranking female celebrity sitting at No. 11, while Lady GaGa settles several steps lower at No. 14. This makes the OWN owner and the outlandish singer the most powerful women in the celebrity category.

Beyonce Knowles sits at No. 32, Jennifer Lopez at No. 38, Shakira at No. 40, Ellen DeGeneres at No. 48, Angelina Jolie at No. 66, and Gisele Bundchen at No. 83. Sofia Vergara makes her debut on the list this year by claiming No. 75, while "Harry Potter" writer J.K. Rowling occupies No. 78.

Topping the list is German Chancellor Angela Merkel. It marks the second consecutive year she rules the list. United States Secretary of State Hillary Clinton becomes this year's runner-up, First Lady Michele Obama is ranked the seventh, while Queen Elizabeth II rockets from her last year's position at No. 49 to No. 26.