Don't forget that even if the dress is big by the time Sept. rolls around, you can have it tailored. I'd try it on a few weeks prior to make sure and then if you need to, have it tailored (which will make it look that much more awesome, since it'll be fitted to YOUR body), and then you'll be good to go for the wedding.
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I can't lose 100 pounds, but I can lose 10 pounds 10 times...
