When first making this list, USC was slotted in at the top, but after doing some research it became clear that Arizona State was going to have to be # 1. Arizona State girls seemingly go to great lengths at sporting events to outdo one another when it comes to looks, which is great since we all benefit from their competitiveness.
A website/calendar company called Tempe12 started by selling a calendar filled with pretty Arizona State women out of a guy's bedroom, and was so successful its now a large and thriving business. That tells you everything you need to know.