Lay out one ginormous t-shirt.Cut off the sleeves.Cut up the sides and lay the shirt open.Cut out the shape of a cape, being careful to keep the neck hole in tact. The neck hole will be too big for your little guy…cut out a section. for safety’s sake, make sure you make this cape detachable by adding the velcro closure.
For Terri’s top. Take a ex large men’s shirt, cut it up, tie on the side. No sewing required. In White, with your brown/black leggings/pants… this is kind of what I envisioned when you brought up your costume.