After 13 years, Warren Buffet took Bill Gates for the No. 1 spot on Forbes magazine annual Billionaires list.

1. Warren Buffett
2. Carlos Slim Helu
3. William Gates III
4. Lakshmi Mittal
5. Mukesh Ambani
6. Anil Ambani
7. Ingvar Kamprad
8. KP Singh
9. Oleg Deripaska
10. Karl Albrecht
11. Li Ka-shing
12. Sheldon Adelson
13. Bernard Arnault
14. Lawrence Ellison
15. Roman Abramovich
16. Theo Albrecht
17. Liliane Bettencourt
18. Alexei Mordashov
19. Prince Alwaleed
20. Mikhail Fridman

[source: Forbes]

The top 10 are:

1. Madonna - $72 million
2. Barbra Streisand - $60 million
3. Celine Dion - $45 million
4. Shakira - $38 million
5. Beyoncé - $27 million
6. Gwen Stefani - $26 million
7. Christina Aguilera - $20 million
8. Faith Hill - $19 million
9. Dixie Chicks - $18 million
10. Mariah Carey - $13 million

Hilary Duff sits at 11, surprisingly beating out Britney Spears and Fergie. That seems unbelievable, probably even to Hill herself.

11. Hilary Duff - $12 million
12. Avril Lavigne - $12 million
13. Martina McBride - $12 million
14. Britney Spears - $8 million
15. Carrie Underwood - $7 million
16. Nelly Furtado - $7 million
17. Fergie - $6 million
18. Jennifer Lopez - $6 million
19. Sheryl Crow - $6 million
20. Norah Jones - $5.5 million

[source: Forbes.com ]