I kept the outfit fairly identical to the original with few modifications. I loved the way the blue gingham looks, it has such a classic appeal about it. I made the skirt a bit fuller than the original because, come on, a little girl needs a twirly skirt! I also kept the belt, bodice, and suspenders like the original. I altered the blouse somewhat and made a ruffled collar instead of the simple band. I also left out what looks like ricrac trim around the collar and sleeves. I kept the puff sleeves and added a band at the bottom to incorporate the blue gingham into the blouse for a cohesive look.
Ready and off to see the wizard!
I know it's not strictly identical, but I think anyone could guess the costume. I added enough of my style into the outfit without diverging from the essence of what makes a Dorothy dress. Plus, I know for a fact the little papoose who wore it looked so darling and was completely ecstatic about wearing it! In the end, that's all that matters!