You can also find a similar getup at your local costume store or even create your own. Here's how: Dress your little one in a blue one- or two-piece outfit. Cut red fabric or a sheet and attach it to the back of your baby's outfit to resemble a cape. For the final touch, draw the iconic Superman "S" shield on a piece of poster board. Color it in and cut it out. Attach it to the front of your superhero's shirt and no one will doubt his super powers!