I am sorry for the late post but I wasn't able to find working Portuguese manual proxies.
If you are from Portugal, log in to stardoll, click HERE, create a scenery and click 'Save'. The dress should be in your suite.
If you are from anywhere else, you'll have to use a manual proxy (How? Click HERE).
Web proxies don't work with this kind of contests.
I used this one and it worked for me:
IP: 18.104.22.168 Port: 80
OR click HERE for more.
After setting the manual proxy, go to this link:
Hit Enter and log in to your account. Once you log in, create a scenery and click 'Save'.
You can now get rid of the manual proxy. The dress should be in your suite.