A tall girl is defined as any girl above the 5'8" 5'9" range. They are almost always misjudged, completely overlooked by guys, often picked on, and have a ridiculously hard time finding clothes.
How should you treat a tall girl? Like any other human being. Don't mention her height, don't ask her if she plays basketball, don't glance at her feet to see if she's wearing heels, don't stare at her like she's an extinct species, and please, whatever you do, don't pick on her. I gaurantee whatever you're about to say to her, she has heard before.
Now guys, specifically tall guys... I will let you in on a little secret. I would say most tall girls, including myself, get extremely jealous when they see you dating short girls. Extremely jealous. I mean, c'mon! Being a nice tall guy like yourself, why would you not want an equally tall, beautiful girl? There is no difference between a short girl and a tall girl, except for height. And that will never be anything more than a number.
PS. Guys, if the only reason you're overlooking a tall girl is because her height supposedly offends your "masculinity".... GROW UP. That is your problem, not hers.
And just so you know, I'm not just making this stuff up. I'm a little over 6 feet myself.
Tall girls: You are beautiful. You are unique. You are you. Stay true to yourself and love who you are.
Did you know: the average height for women in the U.S. is 5'4.6"... Not kidding.
*Tall Girl walks by*
Girl 1: "Oh my gosh, do you know her?"
Girl 2: "YES! I want her legs!"