Harry Potter and his schoolmates at Hogwarts wore long black robes during school hours. These robes had hoods for keeping warm outdoors and gave a wizard-like appearance to the robes. Many people dress up as Harry Potter characters for Halloween, Harry Potter movie events or just for fun. You don’t have to purchase an expensive robe to wear this costume. If you have basic sewing skills you can make your own Harry Potter robe for yourself, for friends or even to sell.


  • Measuring tape
  • Butcher paper
  • Pencil
  • Scissors
  • Black knit fabric
  • Straight pins
  • Sewing machine
  • Black thread

Step 1

Measure the width of the person’s head who will wear the robe. Double this measurement and make a rectangle onto butcher paper that is as wide as this measurement and about 6 inches longer than the distance between the person’s chin and the crown of their head. Round all corners to make the hood of the robe.

Step 2

Draw a rounded triangle shape onto paper to make a pattern for the back of the robe. Make all sides of the triangle about 1 ½ times the width of your back. Cut off the top three or four inches of the triangle and round the edges. 

Step 3

Draw one rectangle the same length as the back triangle and about as wide as half of your chest width. This will make the front of the robe.

Step 4

Make one more rectangle the same length as your arms plus 2 inches and four times wider than the widest part of your arm.

Step 5

Cut out all pattern pieces from fabric. You need one back piece, two hood pieces, two arm rectangles and two front rectangles.

Step 6

Pin the two front pieces to either side of the back piece, right sides together. Sew down from the top about two inches, then leave a gap as wide as half of the arm piece width. Sew the rest of the side seams closed.

Step 7

Sew the two sides of the hood together along the curved edge, right sides facing. Fold the other side over about ¼ inch, then sew a hem in the hood. Pin the hood to the neck of the robe, right sides together. Sew the two pieces together using a ¼ inch seam allowance.

Step 8

Sew a ¼ inch hem into one short end of each arm piece. Sew the long sides together, right sides facing, and the sew the other short end of the arm piece to the hole in each side of the robe to make arms, right sides together. Turn the robe right side out.

Step 9

Cut the bottom of the robe to 1/4 inch longer than you want the final hem. Sew a ¼ inch hem into the bottom of the robe to complete the costume.