Alterations are going to cost a lot more then i thought.

400 bones....I'll I wanted was a bustle and a hem. It should have cost like $150.
Come to find out I've gained weight and they have to let the dress out and their charging me 300 bucks for it.
Should I wait and see if I lose weight? My wedding is on November 5th...
Otherwise, I guess I'm gonna pull a couple hundred bucks out of my a$$.