What you need

• V-neck T-shirt
• marker
• scissors

What you do

1. On the front of the shirt, trace around the neckline and the sleeves.
2. Flip the shirt over and trace the neckline and arm holes on the back.
3. On the back of the shirt, draw a line straight down from each corner of the neck seam to about armpit height, then across from each armpit so that the lines meet at a 90-degree angle on both sides.
4. Grab your scissors and cut around the line of the arm holes.
5. Continue cutting out the remaining lines, making sure not to cut the shoulder seams.
6. From the top of the shirt, cut down the centre of the back to the armpit so that there are two wide straps of fabric.
7. Tie the front straps into a knot, so the knot is close to the body of the shirt.
8. Tie the front straps to the back straps.