If you want it you have to:
1. Go to http://www.enterurltovisit.com
2. Write in the blank URL box http://www.stardoll.com/
3. Log in !
4. Write in the URL box http://www.stardoll.com/en/contest/finish.php?id=1343
This is it ! You will find it in your suite. :)
Free
If you want this beautiful Monster High dress you must:
1.Go to goproxing.com
2. Write in the URL box : http://www.stardoll.com/ and hit enter
3. Log in
4. Write this in the URL box http://www.stardoll.com/en/do/campaign/monster.php?fb=true
5. Wait untill the page is loadig and go to the normal STARDOLL. You will have it