You should just try to have fun. If you want to talk to her and have a reason to say something, do it. If you are just talking because she is attractive...she gets that all the time. If you are having fun, sure. Otherwise, you are just gonna stress out a rando because you don't know that attractive women should really just be treated like everybody else.

That's not how it works, thank God. Unlikely for those genes to be anywhere near each other.