Kevin will have to answer this one as he handles the clothes, but I do know that what is shown each day in the stores is random. There is more clothes than shows on any given day. That is to show how stores over time change their inventory, stuff sells out, new stuff comes in, more of the old stuffs in etc. Not perfect but it is meant to represent that and to encourage the player to check the stores. Also I believe the stats on clothes have some rng, so you might find the same outfit with slightly different quality to them.