Hello :)
That’s a good question. It really depends on the item. There are some items that stay in Closet Child for months, even years for some I expect (if they’re madly unpopular). So, depending on the item’s popularity, something you want may still be there. The other Closet Childs also tend to sell stock more slowly than Harajuku, so again the odds are greater for other branches’ blogs. Of course, there’s no guarantee since CC don’t always mark their items as sold even if they have, and they do tend to put the more popular items online. However, it doesn’t hurt to check. :)
In general, I am creating a new policy for look-out lists - a one-time fee of 500 yen and I create a wishlist for a customer. After that, they can add and remove things from their wishlist freely. This is not just for things you’ve seen months back, but for things you want in future as well. There’s no guarantee I’ll find them, but using this system, I have helped others find their dream dresses. :) I’ll be adding the full details of the policy to my terms and conditions soon.