Where is this dress from?

can you tell me hwere this dress is from....a href="http://static.tvguide.com/MediaBin/Galleries/Shows/S_Z/Wi_Wp/Wizards_Waverly_Place_Movie/crops/wizard-waverly-place-movie17.jpg...if" rel="nofollow"http://static.tvguide.com/MediaBin/Galle…/a you cant find the exact one could you send a link?? thanks in advance(: