Do women wear make-up and jewelry solely to impress men?

My girlfriend and I recently had a discussion about whether women wearing jewelry and/or make-up was for the ultimate reason of attracting men. Our arguments went something like this:

Me: Its evolution. Through many years women who have looked nicer have attracted more men and, in turn, survived longer. By wearing make-up and jewelry they are continuing this attempt to be appealing. Even if they do not realize it themselves I think that make-up and jewelry was invented for purpose of pleasing men.

Her argument: I’m a girl and I know this stuff. I like to wear my makeup and jewelry to look pretty. Even if I was just going out with a bunch of girls I would still want to look good.

You get the basic idea. She thinks that because she wants to look good for her girls just as much as for guys that it must mean that its not for guys. I, on the other hand, think that instinctually, at the most basic level, that these things are to please men.

Any thoughts on the subject? I could really use a good article to read up on this.

Thanks!