How do you remove clothes from the wardrobe back to inventory or stores?

I find it easiest to stay in the first wardrobe you come to, not the beta wardrobe, wear the item, them tick the little box at the left side of it,below your picture there are some buttons, click 'checked to inventory' .

You can also go into the "Wardrobe" link on the left-hand side of the old wardrobe, tick the boxes next to every item you want to remove, press the ">>>" button beneath that, and then hit "move" under the second column. By default it will send them to your inventory.