By Sharon Clott Kanter
Updated Aug 25, 2011 @ 2:00 pm
Zuma Press; Fame Pictures; WireImage; INFphoto

Forbes announced its list of Most Powerful Women in the World today! First Lady Michelle Obama takes #8, and coming in behind her is Lady Gaga (#11), InStyle September cover girl Beyonce Knowles (#18), and supermodel Gisele Bundchen (#60). The #1 spot goes to Chancellor Angela Merkel of Germany, with Secretary of State Hillary Clinton following in second place. See the full list at

PLUS: See Beyonce, Rihanna, Taylor Swift, and more show off their performance style in the gallery.