Where do get this dress?

In the music video Best friends brother Victoria Justice is wearing this little black dress. I really want one like it so could you please put links and if you don't know what that music video is here is a link to the pic of the dress a href="http://www.google.com/imgres?imgurl=http://cdn.idolator.com/wp-content/uploads/2011/05/victoria.jpg&imgrefurl=http://idolator.com/5881062/victoria-jackson-my-best-friends-brother-video&usg=__yUBAAnQcuaxu4XPrnQAXNiHWAA0=&h=293&w=500&sz=28&hl=en&start=24&zoom=1&tbnid=pOFkQt_zHWADMM:&tbnh=83&tbnw=141&ei=GlUGTpGnO-f50gGZqs2ADg&prev=/search%3Fq%3Dvictoria%2Bjustice%2Bblack%2Bdress%2Bbest%2Bfriends%2Bbrother%26hl%3Den%26rlz%3D1T4ADFA_enUS418US418%26biw%3D1024%26bih%3D388%26tbm%3Disch&itbs=1&iact=hc&vpx=684&vpy=101&dur=3713&hovh=172&hovw=293&tx=246&ty=98&page=3&ndsp=13&ved=1t:429,r:5,s:24&biw=1024&bih=388" rel="nofollow"http://www.google.com/imgres?imgurl=http…/a i don't think the picture is very good sorry! thnx 4 da help