Have you wondered how the album sales are for your favorite American Idol contestant?

You just might be surprised.

Do you think that Jordin Sparks has sold more albums than Daughtry?

Would you place your bets on Carrie Underwood out-selling Kelly Clarkson?

What about worst album sales for an American Idol alum?

Do you think that Ruben Studdard has had the worst sales?

Or would you place your bets on Josh Gracin?

Well, here are the album sales of the American Idol alumni as of March 2009.

Best sales:

1. Kelly Clarkson – 9,836,000 albums.
2. Carrie Underwood – 9,408,000 albums.
3. Clay Aiken – 4,896,000 albums.
4. Daughtry – 4,413,000 albums.
5. Ruben Studdard – 2,487,000 albums.
6. Fantasia – 2,309,000 albums.
7. Jordin Sparks – 1,053,000 albums.
8. David Cook – 1,029,000 albums.
9. Kellie Pickler – 990,000 albums.
10. Josh Gracin – 780,000 albums.
11. Bo Bice – 735,000 albums.
12. Taylor Hicks – 719,000 albums.
13. Jennifer Hudson – 669,000 albums.
14. David Archuleta – 665,000 albums.
15. Elliott Yamin – 630,000 albums.

Worst sales:

1. Justin Guarini – 146,000 albums.
2. Diana DeGarmo – 168,000 albums.
3. Katharine McPhee – 376,000 albums.
4. Blake Lewis – 353,000 albums.