Madeline Gardner Naia never worn wedding dress size 6

I have a new, never worn Madeline Gardner Naia gown. This dress was purchased at Bow Ties Bridal in Las Vegas last fall for my wedding this summer. Since purchasing it, I have gained quite a bit of weight and this dress cannot be altered to accommodate my new curves sadly. I have tried it on in store, and once at home. It is a caramel/silver color though in person it appears to have a light blush undertone to the satin fabric, with ivory Chantilly lace with pewter/silver embroidered appliques. Absolutely stunning in person, as you don't really capture all the colors when worn inside. The buttons on this dress are actually crystal buttons, not fabric covered. The Naia dress retails for $2000USD. The Madeline Gardner website describes this dress as, " Mixing old world vintage romance with breathtaking lace details, this flawless dress is sure to have him swooning! Delicate embroidered lace appliques over Chantilly lace adorn the entirety of the dress, loosening on the skirt before culminating in elegant scallops at the hemline. A slender strand of scalloping lace trims the high illusion neckline in a necklace-like fashion, as the tank straps keep you secure and comfortable to dance the night away! The sweetheart shaped bodice accentuates your bust, while the fit-and-flare sheath silhouette flatters your natural curves by hugging your waist and hips before flowing out! The back of the dress plunges into a deep V-shape, defining simplistic elegance before coming neatly together