Tall dresses I'm a little conservative too. I found a couple dresses at Cache. I'm 5'9, 36 d/dd and curvy.
They dont have to be short to be sexy , low cut, cowl front , long, slit to the thigh etc :bootyshake::bootyshake:
My wife is 5'8" and really loves the INC line at Macys. They cover just enough to be SEXY. Their Maxi dresses look great also. Her favorite LBD is a Guess.