I found this idea on another blog and had to check it out for myself. The 'One Step Ahead - Size It Closet Organizer' is a great idea for parents of young ones.
Brand new...and too small already? What a shame! Sometimes the cutest outfits end up in the back of the closet, and your child outgrows them before they're even worn. These clever dividers allow you to organize your child's clothing by size, so you'll never overlook another darling ensemble. Includes five plastic dividers plus 15 removable labels that will take your little fashion plate from newborn to size 8. Colors may vary.
With our first we had received so many adorable outfits, unfortunately many were never worn due to the fact that he outgrew them so quickly and several weren't in the weekly rotation and were missed. Had we had his closet organized with these we would have known exactly what we had in the say, 3-6 month rotation and would have used them all.
The 'Size It-Closet Organizer' comes with five blank room dividers and 15 removable labels includes labels for sizes 'newborn' to 'size 8', plus six blank write-on labels and can be purchased for just $6.95 at http://www.onestepahead.com.