Salma Hayek, Kate Blanchett, Toni Collette..those are some faves. Angelina Jolie has the crown IMO, though. I would love to hate her for being shallow or false, but darn it she isn't!
I just saw her interviewed in some third world nation wearing no makeup and she was just the embodiment of beauty. She is not only stunning by physical standards, she also has that 'aura' whatchamacallit you speak of. 