bridesmaid dresses

So... does anyone know if it's bad luck/bad etiquette to reveal the bridesmaid dresses before the wedding? I want to show you all but not sure if I should! Enlighten me....

bridesmaids

Out of everything I thought about for the wedding, including my own dress, the biggest nightmare is the bridesmaid dresses. My dear sister and bezzy mate, Dan are the chosen ones but they are so so different in their tastes. They both send me pictures of different dresses, none of which the other likes. One wants pastels and the other will not be seen dead in pastels (her words!). What's a girl to do?!