This is a midnight too-tired-to-sleep project.
It took me about two hours to design it and sew it together.
And forgive the hair.
And taking pictures in the shower stall. My dad walked in while I was taking them and just shook his head and left the room. Good times.
(with hood down)
(hood up)

there's nothing intersting outside, I promise.

Tutorial:
(Please don't make this to sell).
You'll need:
About 1.5-2.5 yards of super stretchy fabric (mine was knit).
In this tute, I didn't use stretch fabric, because I had none to spare. Sorry friends.
1. Cut two pieces for the body. You can trace around a good-fitting shirt and elongate it to about mid-thigh length. Leave the shoulders about two inches wide.
2. Deepen the front neckline.
3. Sew the front and the back together at the shoulders and sides, then flip right side out. You should have something like this:
4. Cut two sleeves. Use the length around the bottom of the sleeve as the measurement around your arm:
And the height of the sleeve the height of where you measured your arm to top of shoulder.
5. Sew sleeves together. Pin to inside-out dress, gathering the top three or four inches of it. Sew onto dress.
6. Cut one neck. It will be a rectangle with a width equal to the measurement around the neckline of your dress, and you choice of height.
7. Sew neck side together to form a tube. Attach neck to dress like you attach sleeves.
8. Cut arm cuffs and bottom cuff. They will be rectangles.
(Arm cuff: width= measurement around your arm, height= twice as tall as you want the cuff to be)
(Bottom cuff: width= measurement around bottom of dress, height= twice as tall as you want the cuff to be)
9. Sew each cuff together inside-out at sides to form tubes, and then turn right-side out.
10: For each cuff, fold inside itself to make it half as tall.
11: Attach cuffs.
At the end of the sleeves (or at the bottom of the dress for bottom cuff), put one side of the cuff behind the fabric and one on top, so it sandwiches the raw ends of the dress. Fold the top bit of the cuff in a bit, to hide its raw edge. Pin to dress, and sew.
That's the end of that show.
If you make one, and like it, maybe you'd like to take pictures of it and post them here? (Don't worry, you don't need to take them inside your shower stall).
Any Q's? I'll answer them straight away.