You can preview any cosmetics that are on the market

IF the item in question is up on the market which for the Cloudream Star set for example isn't possible because it's bound on receipt. I know this is probably meant as a helpful hint for people - and it's a good one, really - but I really wish they'd just give us a proper ingame shop in both versions of the game with proper preview functionality included.

Though for the time being, many people will probably be thankful to know this is a thing right here.