Most people with little girls get or make a pillowcase dress at some point.
I don't have little girls, and so dress sewing is mostly for me. I don't feel like I look all that great in a bag dress, but maybe a top?
|via pinterest I think it was probably Anthropologie originally|
Simple instructions: I took two squares 18" x 18" of a gauze that I have had for a long time. I ironed and hemmed the bottom of each, I serged the side edges and ironed and hemmed a 1 1/2" casing on the top edge.
Then, with right sides together I sewed the two pieces together 9" below the top. I top stitched the seams on the 9" armholes.
I threaded the ribbon through the casing, cinched, and tied a bow.
Here is a pinterest pin for directions in making a pillow case dress for a kiddo: