Originally Posted by
Horpecha
Still the explaination on the transmog stuff lacks a lot of detals. I for one found out, that you need to sell items, which you could have traded to others, in order to unlock the appearance account-wide.
I even waited for the full 2h to expire and checked it, but it wasn't unlocked on other characters until i sold the item. And yes, equipping the item, doesn't unlock it for your whole account. So as a summary, if you want to unlock the appearance of an item account-wide, you'll have to sell it once, luckily you can instantly buy it back, as the trigger seems to be the simple action of selling or deleting an item.