I do believe you are right, @Hanna_Brassheart. I believe it's still an active item unlike that Fairy outfit and a few others.
I know that the hat has been released. Not sure about the clothes or mask. (If there is a mask.)
I'm going to see if I can find out a few things. Be back in a few minutes.
EDIT: By the Fairy mask I meant the one in the picture below (third from left). You can see that the hat in question is the Rebel Aviator (second from right). I think the mask is the Gas Mask. I wonder what the clothes are called?