Prince Harry's girlfriend Chelsy Davy has been named the summer's sexiest female celebrity, according to a new survey by Goodfella's to promote its Deeply Delicious pizza while the X Factor host Dermot O'Leary was named the summer's sexiest male celebrity.

Big Brother housemates Chanelle and Liam also made it into the Top 10 while Charley came out on top as the least sexy celebrity.

Top 10 Females

1. Chelsy Davy
2. Jessica Alba
3. Scarlett Johansson
4. Cameron Diaz
5. Sienna Miller
6. Rihanna
7. Cheryl Cole
8. Kate Middleton
9. Paris Hilton
10. Chanelle (Big Brother)

Top 10 Males

1. Dermot O'Leary
2. Steve Jones
3. Johnny Depp
4. Justin Timberlake
5. Orlando Bloom
6. Prince Harry
7. Jude Law
8. David Beckham
9. Prince William
10. Liam (Big Brother)