The first was is beautiful! If you like that one the best, but aren't too sure about how it fits on you, try to see if you could get it tailored to the way you like it best. Dress 2 is great too - I think that it will be perfectly fine for an outdoor wedding and it makes you look amazing. As far as dress 3, if it didn't make you go WOW - then don't even bother. It's your wedding, not your mom's or your sister's. Although their opinion matters a lot, they don't have the final say - you do. If you don't want to go through the hassel of having dress 1 tailored, the I would go with dress 2 - hands down - no questions asked.
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