As les said, you have to use V4 clothing on V4 and V3 clothing on V3 etc. but you can morph them any way you like and it will work.

For converting V4 clothing to Miki 2 for instance, you would need something like WW2 which is what I use for doing that!

Injustice will be avenged.
Cofiwch Dryweryn.