DIY: Green Monster Costume

So you want to be the beloved Green Monster for Halloween? No, not Wally- the physical 37 ft (and 2 in.) wall. Here’s how I pulled it off, with the famous Citgo sign glowing in the background.


  • Foam poster board
  • Printed Fenway signs
  • Printed Citgo logo
  • String/ Yarn/ Twine for strap
  • Scissors and cardboard cutter
  • Double sided tape
  • Headband
  • Tea lights
  • Small lid or box
  • Glue gun & glue

Green Monster Wall

  1. Print and cut out the Fenway wall signs. I created the below graphic on Canva and split it into 6 separate photos for printing.
  2. Adhere the photos to the poster board with double sided tape.
  3. Cut off the excess poster board (if needed)
  4. Adhere the strap with a hot glue gun.

Here is Canva template.

Citgo Headband

  1. Adhere the lid or small box to the headband using hot glue. I found this small gift box and headband at Dollar Tree.
  2. Cut the printed Citgo logo to fit the opening of the lid/ box. The below logo is for a lid the size of 4.25 in x 4.25 in
  3. Adhere one side of the cut out logo using double sided tape.
  4. Arrange tea lights as you would like.
  5. Tape down the other side(s).

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