I'm like 6' 3" or 6' 4", so I'm pretty tall myself, but I have noticed once in a while while out shopping or whatever that there are some tall "genetic" women, too (or at least I think they are "genetic"), so I wouldn't worry about the height issue too much. As long as your overall appearance and tone is that of a woman, your height shouldn't be a serious problem. Carry yourself with confidence and you'll be fine.