I had my first go at tie dye t-shirt crafting in fourth grade. Here's the adult version:
You’ll need:•a denim shirt
If your shirt is new, you should wash it before getting to work. Crumple and bundle your shirt with rubber bands. Pour 3 quarts bleach and 3 quarts water into the tray. Using protective gloves, place your shirt in the tray. Allow to sit for 15-20 minutes.
Remove the shirt and rinse thoroughly with water. (Review the complete instructions and images at Honestly WTF).
I love the result! It looks like clouds in a sky. I'd pair the shirt with peach colored jeans.