There appears to be more than one free outfit. There is a School Jumper outfit and a School Robes with Jumper and Tie which are one piece outfits. In addition there are separates.
School Skirt and Shoes
Jumper with Hogwars Tie
There are outfits for both men and women. I've put the male items in storage already but my recollection is they are basically the same.
I'm not seeing any of my other wardrobe items. Seems you might only be able to wear the Pottermore items here. Is anyone seeing that in wardrobe?
They disable your items and locomotive, Only when your at the space, When you leave all your items return.