Where can I buy giorgio armani gowns?

I live in Houston, Tx. I need to find a boutique where they sell armani gowns. Maybe even couture gowns. Money is not a concern. Can someone tell me any known boutiques or stores. I've already tried neiman marcus.|||I think it best if you consult an expert and not the kids here on Yahoo.|||ebay|||Pretty sure you could find something at Saks. They have Versace, DVF, Zac Posen, Marc Jacobs, Celine to name a few. I can't imagine there would not be an Armani gown running around there. Also there is a Giorgio Armani store in the Galleria. If it's a specific dress you are looking for then call and ask the company to send it to you.