Say hi and just be yourself. You can be polite without seeming like a weirdo. If you are someplace like McDonalds or the bus stop, consider letting her on the bus or letting her order ahead of you. Compliment her outfit and her smile...just be a gentleman. These simple things say a lot about you. Best of luck!
RE: A bit of advice from you girls
Bwhahahahaha....someone needs to! lol