Something a bit shorter

I have been asked alot by friends what I'm wearing to my formal in November and i really have no idea, i know i want to wear a short cocktail dress, kinda step outside the box. i dont know what colours something like black, yellow or white. Everyone is wearing the long silk dresses so i think i might stand out. these are a few dresses I'm thinking about, i will probley get them made because i dont know where to look to find one haha.