Where should you go to buy a dress as a guy?

If your'e embarrassed, why not buy one on line.

Clothing stores that sell dresses to women will be just as happy to sell the same dresses to men. They do not even particularly care whether you are buying the dress as a gift for your girlfriend, or for your mother, or to wear yourself because you are a cross dresser or a female impersonator. They are in the business of selling clothing. If you have money, they will sell it to you.