ABC/Shareif ZiyadatIn case you need reminding, pop stars make a lot of money -- especially female ones.  That's why so many of them are included on the top 10 of a new Forbes magazine list of "Hollywood?s Highest-Paid Women," which ranks stars by how much money they raked in between May 2011 and May 2012.

Britney Spears comes in at #2 on the list, right behind Oprah, with 58 million dollars earned.  Amazingly, that total doesn't even include Britney's reported 15-million-dollar salary for The X Factor, since she signed her deal toward the end of the time period set by Forbes for its list.  

Taylor Swift is #3 with $57 million bucks, while Rihanna, Lady Gaga and Jennifer Lopez are numbers five, six and seven, respectively.  Katy Perry's in at #9 with a haul of $45 million.

Here is Forbes' list of "Hollywood?s Highest-Paid Women":

1. Oprah Winfrey, $165 million.
2. Britney Spears, $58 million.
3. Taylor Swift, $57 million.
4. Ellen DeGeneres, $53 million.
5. Rihanna, $53 million.
6. Lady Gaga, $52 million.
7. Jennifer Lopez, $52 million.
8. Gisele Bundchen, $45 million.
9. Katy Perry, $45 million.
10. Judge Judy Sheindlin, $45 million.

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