There's a million billion tutorials for these online and at this point I don't even know which one I used. It's made out of corduroy so that's fancy, I guess. But overall just a pillowcase dress.
My almost-3 year old made it.
No, really. She picked out the fabric (Squirrel-ys!), was adamant that the straps be Black Leow (black like a kitty), and sat on my lap while we sewed every seam. She was careful not to get her hands too close to the needle as we fed the fabric in and was completely in awe when I showed her the finished product.
It's just a simple, basic, pillowcase dress. But I couldn't be prouder.