All I need in life is fabric paint, scissors and old tee shirts.
Find an old t shirt. Make sure it’s larger than your normal size by at least 1. (Example: Small = Med. needed)
Cut the neck seam out. Cut the sleeves off. Deepen the sleeves to your liking. Make the neck hole bigger around straps to make straps thinner.
Cut bottom seam off. Cut bottom of shirt into several 1 cm strips until the entire bottom is in fringed.
Use any color of desired fabric paint to creat a design either found online or written on your own accord.