Just put "A4" or "A3" in the search box at the top right of the screen and you can pull up all the items relating to those. Clothes get increasingly harder to fit with the earlier versions, with the V4 to A4 clothing look for the "Unimesh upgrade" items. A3 is pretty ancient but still has a large following among the anime set. The LE version as I recall is a lower resolution version but don't quote me on that, I can't swear to it.

Also I would wishlist the items and wait for a sale, they normally are not discounted and quite expensive off sale.

Clothing gets a lot easier to fit when you get to Genesis - any of them.