No. 1 on the list is 2010 is first lady Michelle Obama, followed by the CEO of Kraft Foods, Irene Rosenfeld. Oprah Winfrey is no. 3.
Other notables include German Chancellor Angela Merkel at no. 4, Ellen DeGeneres at no. 10, Twilight series author Stephenie Meyer at no. 49 and athletes Serena (at no. 55) and Venus Williams (no. 60).
To view the list, click here.