With an estimated $290 million haul from May 2010 to May 2011, Oprah has earned almost $200 million more than Lady Gaga, who comes in a distant second.

Also making the top 10: Bethenny Frankel, Gisele Bundchen, Taylor Swift, Katy Perry, Beyonce and author Danielle Steel.

The 57-year-old media mogul, who quit her successful chat show earlier this year after 25 years, to focus on running her own network, topped the Forbes magazine’s Highest Earning Hollywood Women list, ahead of celebrities including Lady Gaga, Gisele Bundchen and Ellen DeGeneres.

Her closest competitor You and I hitmaker Gaga only managed to make $90 million in the same period, $200 million less than Oprah, while former Real Housewives of New York star Bethenny Frankel was third with $55 million.