It honestly looks like a diaper onesie combo. Imagine how when it gets wet it's going to sag in the back than it already does because of so much fabric bunched up there. Totally looks like she's got a full diaper on under it
DIY Men’s Shirt to Wrap Crop Top Tutorial and Pattern from The Felted Fox. Start looking for men’s shirts to restyle into this DIY Wrap Crop Top. This is an easy DIY if you sew. Note: The pattern is for size but you can.