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Jellyfish Costume

Dive into fun this Halloween with this cute sea creature costume. A shimmery umbrella completes the look. The secret to the shine? Strips of cellophane and bubble wrap. 

jellyfish costume

Photography: Shanna Sullivan

Source: Martha Stewart


This costume idea comes from our friends at For the base of the costume, kids will need a pajama set in white. If you can't find a white umbrella, a transparent one will also work. 


  • White long sleeve top (Pictured: Primary The Long Sleeve PJ Top, in White, $12,

  • White pants (Pictured: Primary The PJ Pant, in White, $12,

  • Umbrella

  • Bubble wrap (large and small)

  • Iridescent cellophane

  • White tape

  • Hot-glue gun

  • Scissors

  • Tape


  1. Make the tentacles: To make 8 tentacles, cut strips of large bubble wrap on the diagonal between bubbles, varying lengths by taping 2 or 3 strips, end to end, with clear tape.

    jellyfish costume
  2. Cut 16 strips of small bubble wrap 22 inches long and 5 inches wide; shred and twist 1 long edge of each. Cut 8 same-size strips of cellophane sandwiching each between 2 bubble strips. Cut 2 base strips from small bubble wrap, 10 inches wide; shred long edges. Cut 8 strips of small bubble warp; shred 1 edge of each. Hot-glue smooth edges of 4 strips to each center strip.

    jellyfish costume
  3. Open umbrella, and cover any metal or black parts with white tape. Tape thin tentacles to inside rim of each umbrella panel. Tape thick tentacles to cross spokes at top of umbrella. (Tip: Ensure to glue smooth edges of tentacles to umbrella spokes as plastic will melt.)

    jellyfish costume

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