The best looking girls are probably not seeing anyone because 99% of guys are afraid to approach and just start chatting.
So, when you go into a social situation...find the most attractive single girl in the place and go introduce yourself. Chances are good that you'll have a clear runway for a quick takeoff and climb to altitude.
And don't forget, when you go up and introduce yourself..look at her eyes, and NOT at her chest
Actually the scientific ratio for that to be successful is 1 out of 7.
The other 6 will stuck up snobs that know they are hot while the 7th wishes she weren't so hot, or doesn't even know it.
The chances of successful interaction with #7 is 89% depending on your approach.