IMHO

Kirsten Dunst - beautiful and classy
Elisha Cuthbert - depravity beckons
Kate Bosworth - drop dead gorgeous

dont recognize some, others don't do it for me.

Then there's Paris Hilton. Feh, what dreck.

On a good day, Christina can compete with anybody on the planet.

But Elisha Cuthbert (in her prime) is my current computer desktop wallpapaer.

looks more like that four letter word - male - or at least what we continually seem to be doing - checking to be sure the damned thing has not fallen off.

Stacy Kiebler

Learn how to spell Aguilera

Laetitia Casta?
Evangeline Lilly?
Jennifer Love Hewitt?
Amanda Beard?  (hot swimmer)

Florida chick/singer  Willa Ford

Let me know, I'll hit the second half of the alphabet.
Estella Warren?
Jenna Bush?
Jessica Biel?
Jessica Alba?

And I am only halfway thru my alphabet of hot chicks!

Valerie Perine could chase them all up a tree.

or what they look like, I will have to say the only women in Hollywood under 30 that I would even consider are Scarlett Johanssen and  . . . Hell, I think that's it.  Forgive my curmudgeonliness but most young girls I've met are a pain.