Step 1: “Acquire” old shirt from Daddy and dye it pink (dye about $7 from Spotlight)
Step 2: Cut off the collar and cuffs (and the buttons to save for some other use, if you like)
Step 3: around each cuff create a casing (by folding about 0.5cm, then about 1.5cm and stitching)
Step 4: Around the neck create another casing (by folding 0.5cm, then about 2cm and stitching)
Step 5: Thread elastic through each casing and stitch – make sure the neck elastic can stretch over the head
My Little Miss is 6 years old, so the length is fine on her, but a smaller Miss might need the length shortened a little.