Wedding Dress Stress

Oh no! That is frustrating. I thibk you have enough time to get the changes you want

Most dresses are made from fairly fragile materials. And to get a nice drape, falling nicely over curved body parts, often sections and trim are cut on the bias, the diagonal. So they are flexible, and stretch. When you tried it on the first time, some openings and measurements around the dress were undoubtedly stretched up to 2 inches, thus fit easily over your body. This was not balanced stretching, pleasant to the eye. more like you warmed up a square of saran wrap then let a kid pull on it randomly. When they cleaned it, they should have measured and adjusted any individual areas really stretched. And steam cleaning or pressing, then pressing the moisture back out with an irom and dry cloth, should have restored much of the gown to it's original sizing. Like pitting your favorite jeans in a hot cycle, twice. So you feel you can't get into it.
That is NORMAL. They have not shrunk the dress.
3 months before the wedding, or a little less, take it for fitting Don't get any bigger. losing a little as in 10 pounds won't hurt, but don't try for a big weight loss, because in your head it is too small. Usually there are at least 4 places where a 1/4-1/8 inch increase can be made, sometimes 6 or 8. You can always get an inch. Some times and places up to 3.Also they can pull and jiggle a bit with you there, a do a little of the stretching done by previous folks that stretched the dress here and there. If you have not increased in inches, dress is smaller, that much is always doable. Sometime, the extra you don't see, like you weigh the same, but your legs are toned more thinner) and your bust size is up ( bigger), then one of more thin strips of fabric are added at seams, and covered with a little beading or whatever, and 1-2 inches more can be added. Beading or sequens can be tough on inner arms. Now you know why, when beaded things, and glass crystal, were in fashion before, so were long evening gloves, since the upper underarm takes the worst abuse, and benefits from a soft double layer or piece of la e between you and the dress when your arms are down or moving. Some gowns can ha e sleeve openings edged with white or same color satin piping. None of these small adjustments are costly. ... Missing obvious stains in reconditioning means someone other than your salon people, whom it was sent to, were tired, or working in bad light, or simply not paying attention. The ladies you deal with catch the flak. All they can do is send it back. My daughter's flower girl dress from summer came back from cleaning with a small palm and 4 finger handprint in bluish purple ( they served blueberry pie to kids.) in the middle of a light yellow skirt. It took 5 minutes for a person at the cleaners to say someone was sleeping on the job, and clean it and pat it dry, perfect. Speak up over any stains. Some, like mine, did not respond to a stain stick, but did to enzymatic cleaner for contact lenses. A case of a more experienced person knowing the proper solution. It may be your cleaner did the most obvious, and moved on, and you have good reason to send it back.

That is a beautiful dress! How frustrating that it wasn't ready for you when it should have been such an exciting day to get the dress! Hopefully they are able to fix their mistake and make it right. I would probably start researching other seamstress just in case there is another issue when you pick up the dress again. If all is well the next time, I'd probably stick with them since their seamstress if probably very familiar with altering that designer's dresses.