This means that that particular size and color is out with another customer right now. Check back in about a week or so to see if the dress is back in stock for you. If you want a dress right away, we would recommend ordering one size up, if possible, and having a friend hold it in the back while trying on if it's a bit too big. Afterwards, take your bust, waist and hip measurements and compare them to our size chart to determine what size will fit you best.
For information on how to take your measurements, visit our measurement guide for instructions.