If you are from France just follow the steps without the proxy.
Go to this proxy:
Copy and paste:
Log into Stardoll.
Copy and paste onto proxy's url:
Joining the club will get you the snorkel.
Now to get the outfit and the sea shell you must:
Tell a friend to join the club and click on the outfit to be directed to the sims3 site.
You will receive all the gifts inside a sims3 bag.