I've had some very old sleeping shorts for a long time and thought about transforming them into a top. I tried and it worked - it's a bit revealing I must admit. But I like it.
- Cut off the crotch and seam this part
- fold in waistband, I did it because it just wasn't pretty and fixed it with a few stitches by hand.
Now you're done basically, you can add embellishments if you want. I put some studs on which sadly fell off soon -.-