It's literally going to be on the beach. It will be pretty informal (the bride will be wearing flip flops). And it will be hot & sticky. Ideally I would like something floaty, midi or maxi length, with short sleeves or straps (not strapless). And I would really like something in a lightweight material that won't make me all sweaty. Oh, and something that won't crease too easily either. The list is never ending 
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Can anyone please help me find something suitable? The wedding isn't actually until October but I don't want to leave it till then to look as all the summer clothes will be long gone. Thank you to anyone that can help.