It should be long flow and girly. It should be a girly color. The best colors are pink, light blue, light purple, fuchsia, white or light green. It should be sexy and if your prom is not at school, inappropriate and want men to date, kiss, and have sex with you.
girls should wear an ellegant long dress, short dresses are for for formal, but prom calls for long dresses. the guy should always wear a tuxedo that matches the girls dress, so its always important to ask what color she is wearing. girls shouldn't wear anything too revealing,