L.H., You're probably talking about Kate Beckinsale who is quite beautiful.
I can't remember any of her films right now but Samantha Eggar was a stunner and quite sexy.
Jessica Lange in Rob Roy and Madeliene (sp?) Stowe in Last of the Mohicans and Eva in The Sun Also Rises really did it for me.
And Kim Basinger in L.A. Confidential.