Spring Qipao Umbrella doesn't work in Cosmetic Wardrobe

[rugged yacht]

Someone can explain it?

[reef adder]

So basically fashion items have some "type" and you can only skin an item over another one of the same type.
For example a cloak on a cloak, a backpack on a backpack, wings on wings, etc

The issue is that it's often not really clear which item is of which type exactly