Hayden takes the cake!  Go Here for pictures of each lady, and to find out why/how she made the list!

1. Hayden Panettiere
2. Natalie Portman
3. Rachel Bilson
4. Scarlett Johansson
5. Eva Mendes
6. Christina Aguilera
7. Sienna Miller
8. Lacey Chabert
9. Lindsay Lohan
10. Fergie

Pics: Hayden in Vanity Fair Magazine.  Great pictures!