Hi, I have purchased a dress with you, however the dress size is one size smaller from what I need. I have not taken off the tags nor have wore the dress. I would like to exchange it for one size up. The dress is size Small and I will need to exchange it for Medium size. I was hoping to lose weight but that never happened. Would you please exchange the dress? I love it and I want that dress but one size larger. Thank you! Best, Gina