I just organized the diasater that was Sprite's closet, and i have an idea to share with you! She has a lot of clothes to grow into, so I used shower curtain rings to make dividers, so it's obvious which clothes are which size without checking the tags. I wish I knew about this when she was a baby, because we had so many sizes of baby clothes just waiting to be worn!
It's easy- just get a package of clear shower curtain rings ($1 at Target). Cut a thin strip of paper as wide as the ring is and as long as the flat part is. Use a permanent pen or marker to write the size (I wrote horizonatally, but you could also write vertically).
Add a layer of Mod Podge to the ring, top with the paper (good size down) and press it firmly in place. Add a top layer of Mod Podge and let dry.