Vanity guide?

[Kienkarajo]

I haven't unlocked it yet, but my understanding was that this game's vanity system simply applies the appearance of one item onto a different item (using a crystal catalyst). You need to already have both items, so you should already know how they look. It's simply a matter that after it's been glamoured item A is going to end up looking like item B. To see that before glamoring it, just put on item B directly and look at it.

Or did I mis-understand something, since (as mentioned) I haven't unlocked the system yet?

Yeah the problem is that some items like dresses are really expensive and some of them have different colors and dont want to purchase if I dont know how looks like