I am an older bride and I love this dress because it appears to have sort of a vintage feel. I am stumped on size to order however --I normally wear 8 or 10 and according the the size chart I would need to order 12 --- I would rather order larger and have altered locally if necessary, but am unsure. Also my wedding will be in November and it might be necessary to have a llittle bit of some sort of sleeved something with it--- any suggestion?