Cameron Diaz.

I'd bet my money on Diaz, she'll win

I am not sexually attracted to women, but if we’re talking about whose physical characteristics/aesthetic I prefer, I like Monica’s. Perhaps I’m biased because of the darker features?

Monica, not close

What are they doing, battling to the death? I remember that Diaz claims she actually learned some unspecified martial arts in preparation for Charlie's Angels. I don't really believe it, but if it is true, I think she's more likely to come out on top.

Cameron Diaz was really pretty, Monica Bellucci I think was less my type, but either way they're both old now. =P