Like Cindy said, looking pretty does not a woman make.
I do think seeming female can help though, part of that is attitude, part is presentation, part is behavior, part is voice.
The need to look good is a personal one, and genetics, as well as the opinions of others are what ultimately decide what looks good.
If looking good, or at least better, didn't matter at all, why do all societies, sexes, and/or genders have the occasional FORMAL event? Why do soldiers have dress uniforms? Why does the Pope wear that hat? Why do football players wash their uniforms between games, when they are just going to get dirty? Why do men shave, or trim their beards? Why doesn't the president of the US wear gym shorts when he delivers the State of the Union Address? Why do actors wear tuxedos to The Oscars?
Every item of Western clothing or fashion worn today by women was first worn by men... except for the bra and g string. Dresses, makeup, skirts, heels, wigs...
It is no surprise to me that people wish to look better, and seek out feedback at a place like this from time to time. Heck, it is even fun to do, especially when it doesn't take so durn long.