This orange and taupe silk dress from Marc by MJ retails for $598 at Saks.
Lulu's has a great alternative that is a little more wearable as well as affordable at only $37. Click HERE if you're interested in purchasing, only available in the color shown.
*Update - 7/12/11* - The pink option above is sold out, but Lulu's just added this orange version to their site. It retails for $37, click HERE to purchase.