In no particular order:
Elizabeth Taylor
Best Performance(s): 'A Place In the Sun' and 'Cat On a Hot Tin Roof'
Audrey Hepburn
Best Performance(s) - 'Breakfast At Tiffanys' and 'Roman Holiday'
Ava Gardner [/B
Best performance - 'The Barefoot Contessa'
[B]Sofia Loren
Best performance - 'Two Women'
Natalie Wood
Best performance(s) - 'Rebel Without A Cause' and 'Splendor in the Grass'
Lauren Bacall
Best Performance - 'Dark Passage'
Eliza Dushku
Best performance(s) - 'BTVS' and 'Wrong Turn'
Alexis Bledel
Best performance(s) - 'Gilmore Girls' and 'Sisterhood Of the Travelling Pants'
Kristen Bell
Best performance(s) - 'Veronica Mars' and 'Forgetting Sarah Marshall' and 'Gracies Choice'
Evan Rachel Wood
Best performance(s) - hands down 'Thirten' and 'Running With Scissors' and 'Across the Universe'.
Kristen Stewart
Best performance(s) - 'Speak' and 'Into the Wild' and of course 'Twilight'
Angelina Jolie
Best performance(s) - 'Beyond Borders' and 'Girl Interrupted'
Sarah Michelle Gellar
Best performance(s) - BTVS and 'The Air I Breathe'
Natalie Portman
Best Performance(s) - 'Closer' and 'The Professional'
Rachel McAdams
Best performance - 'The Notebook'
Charlize Theron
Best performance - 'Monster'
Kirsten Dunst
Best performance(s) - 'Virgin Suicides' , 'Marie Antoinette' and 'Eternal sunshine of the spotless mind'.
Mila Kunis
Best performance - 'Forgetting Sarah Marshall'
Summer Glau
Best Performance(s) - 'Firefly' and 'Serenity'
Michelle Rodriguez
Best performance(s) - 'Girlfight' and 'Lost'
Jeez, it was a tad longer than I thought......
Version : http://www.cinemavoyage.com/top-20-most-beautiful-female-actresses/