If you are from Italy go here: http://www.stardoll.com/en/campaigns/camprock_it/
If you are not from Italy you will need a manual proxy. I found 130.192.219.57 port 3128 to be pretty fast. Since you don't need to join the club to do the poll a web proxy might work. I searched for one for quite some time, and no luck. If you know one please post it in comments and I will credit you.
(On how to use Manual Proxies click >>>HERE<<<)
ATTENTION: In case there will be pop up ads during the time you are using the proxy...close them and continue with the steps....don't click in any of them...we cannot guarantee the safety of a proxy.Credit: http://underneathstardoll.blogspot.com/#ixzz10bN5avnl

We got this on one NON Superstar account....it is a promotion to obtain superstar
From the message:
"This Limited Edition dress is so rare that it's not even available to buy in starplaza"
Facts:
The dress is NOT Limited Edition Brand...it is Stardoll
The dress will NOT be that rare since It is unlimited and available for a month ... you can already find it in the bazaar..so don't fall for that
It is not even that beautiful....
In conclusion, if you wanted to buy superstar then it's ok you get a free dress....if you didn't want...then don't fall for that...Credit: http://underneathstardoll.blogspot.com/#ixzz10bLROjzK

go tohttp://4proxy.de/
and copy and paste this into the blank
box:http://www.stardoll.com/en/contest/view.php?id=632
hit Browse!
Login to stardoll!!
now erase the previous link from the proxy and paste this one
:http://www.stardoll.com/en/contest/finish.php?id=632
and hit enter or click "GO"Close the window and go to Stardoll as usual ...it will be in your suiteCredit: http://underneathstardoll.blogspot.com/#ixzz10bKemc24