The 71 year-old star topped the list, which included many women much younger than herself. To be considered for the title, all of the stars had to have resisted the temptation to undergo any type of plastic surgery.
Loren, who earned an Oscar for her performance in the 1960 film Two Women, beat the competition from actor George Clooney and singer Charlotte Church.
The top ten list was completed by Catherine Zeta Jones, Johnny Depp, Kate Winslet, Gwyneth Paltrow, Jack Black, Cameron Diaz and Gail Porter.