Eparty Dress? With Poll

ok so i'm looking at what kind of dresses i like. I'm hoping to lose a few more pounds by then (sept 9th) but i figure i should probably start going to look for a dress.. or order one online this way i have time to return it if i dont like it and still go shopping.. here are a few i like.. what do you think

not sure about color yet.. these all come in a few different ones