James Cameron, Sandra Bullock, Britney and Madonna also named most powerful celebs of 2010. By Gil Kaufman Lady Gaga Photo: Noel Vasquez/ Getty Images Lady Gaga has won a lot of accolades during the past year and met some pretty impressive dignitaries , but crashing the Forbes magazine annual World’s Most Powerful Celebrities list puts her in some truly rarified company. The singer, who launched her latest iteration of her never-ending Monster Ball Tour in Montreal on Monday night, debuts on the list this year at #4. She landed there thanks to high marks for her Web visibility (#1 on the list) and a $62 million haul between June 2009 and June 2010, $31 million of which came from touring (after a gross of $95 million), with much of the rest courtesy of deals with Virgin Mobile, Polaroid, Monster Cable and MAC. Gaga joins a top 10 that is dominated by women, including the once-again #1, Oprah Winfrey, who retook her top rank thanks to $315 million in earnings after ceding it last year to Angelina Jolie (now #18). The list ranks celebs based on earnings over the previous 12 months, as well as visibility in print, TV, radio, online and social media. Beyonc
