Cross my heart, I swear! When you're tall you learn to have excellent posture, because it's SO noticeable if you slump (not to mention that good posture has a slimming effect). No "duckface" lips, no confused open mouth - important things to remember when making an impression.
Also, I sincerely appreciate everyone's honest, constructive advice. I'm from New Jersey, and my mother went to art school in Philli, so my family does not have a history of being involved in Greek life. Growing up so close to NYC, everyone around me was very into "high fashion" and street style, not so much the classic looks that are appropriate for rush. Learning online & from friends in sororities are my only two real options.