The Narnia Chronicles, written by C.S. Lewis between 1950 and 1956, have been made into both television series and movies. The characters, as described in the books, all have very specific features and the recently produced Narnia movies by Walden Media portray the costumes of these characters well. Making one of these costumes is not difficult and you will need only minimal supplies to do it.
Decide which costume from which character you want to design. Each character has totally different costume designs so you will need different materials for each.
Acquire the base of the costume. If, for example, you want to make Peter's costume, acquire grey pants, a grey sweater and a long red T-shirt. You will need to cut the sleeves off the T-shirt and, using a fabric scissors, cut the bottom of the T-shirt into a V-shape. Make sure the shirt is big enough the reach your knees. Then wrap a red or black belt around your waist. If you want to make Susan's costume you need to acquire the base too. Find a long red dress, that almost reaches your ankles, and a very light brown or grey T-shirt that reaches down to your hips. Do the same as with Peter's costume and cut a V-shape on the T-shirt. If you are making other characters' costumes, follow the principle of acquiring the base of the costume first.
Add detail to clothing. For Peter’s costume either sew or paint a large yellow lion onto the front of the red tunic. For Susan’s costume, find a large brown belt and tie it around your waist. For other characters such as Lucy or Edmund, add the detail specific to their costumes.
Add accessories. For Peter’s costume you will need a sword, a shield and shoulder armor. You can either make these yourself or buy them in a costume store. To make any of these simple create the design out of cardboard and glue tin foil to them to give it a shiny, steel look. For Susan, you will need to buy or make a bow, quiver and arrows. These can be made out of wood by cutting them out of plywood boards using a power jigsaw.