Aw, that sucks :( Did you make sure you didn't leave it in your inventory? Lol I do that a lot.
Oh man. that does suck. Did you try searching your shop, vault and wradrobe by typing in the name of it?
Maybe file a ticket to see if they can figure out where it went. If you can do that.
I ate them 8D
New items can take a few minutes to show up in the wardrobe.
I'm rambling, hopefully you just overlooked it and you'll find them soon. Good Luck!