Transmog problem(Help!)

Hi, I love doing transmog in this game and I already did many transmogs with my character, but as of now as click "apply" the item shows up - here's the catch. I logout then login my transmog is all gone. I was like - "okay... better try again"
Again and again still the same problem.
It shows up, but when I logout and login again it rolls back to my previous transmog.

I've wasted a lot of gold :'(

Update:
Solved: Just had to place the items to bag. Thanks to Beks! ^_^

Try this.. When you transmog , put all items from your character into backpack and relog. Then when you come back online just place that items from backpack on your character. Problem solved :)

You're the man! really helped man ~