How do you get the Christmas wallpaper moshi monsters?

To get the Moshi Bandz Wallpaper, you have to buy Moshi Magazine #1 that contains a secret code for the wallpaper. Enter the code when you sign into your account. Open your items bag and is should be...

You can get it by buying Issue 1 of moshi magazine because there's the code inside it.

I believe you have to order the Moshi Magazine, and there is a code in there.