Welcome to Subeta/the forums! :) As has pointed out, we have an event that allows users to unlock special skins in the wardrobe. Feel free to ask if you have any questions :)

Useful Links:

What to do on Subeta? Useful general information for newbies Finding friends (Chit Chat) SubetaLodge (Offsite item database, pet colours etc.)
FAQ (Zombie) Site Event: Survival Celebration (Event FAQ here)