Planet Costume
Bring the solar system to life with an out-of-this-world cosmic look.
A planet costume is a stellar choice for science fairs, space-themed parties, and Halloween. This guide focuses on creating a classic ringed planet like Saturn or a vibrant Earth using a comfortable dark base and lightweight dimensional elements. It is a highly customizable look that works beautifully for all ages.
- Difficulty
- Medium
- Time
- ~90 min
- Budget
- $20–60
Try it on
See yourself as Planet
One clear photo of yourself; we render you in this costume — face untouched, full body, about 20 seconds.
One render, $1. No account needed — if it fails you're not charged. Pricing.
Your photo is sent to Google's Gemini API to make the render and isn't used for training. Renders are AI-generated and labelled.
Want a different costume on this photo, or a whole group in costume? Open the Try-On Studio.
What you need for a Planet costume
Short on time? Buy it ready-made
Spirit Halloween sells the complete Planet costume — one box instead of 5 pieces.
Black base layer
A solid black long-sleeve shirt and matching leggings or pants to represent the dark void of space.
DIY: Use any matching dark blue or black sweatpants and sweatshirt from your closet.
Planet body board
A large sheet of sturdy, lightweight foam board or corrugated cardboard to cut into your planet shape.
DIY: Flatten and tape together large shipping boxes.
Acrylic paint set
Bright acrylic paints in colors matching your chosen planet (e.g., blues and greens for Earth, or yellows and oranges for Saturn).
Shoulder straps
Thick black elastic band or ribbon to suspend the planet structure comfortably from your shoulders.
DIY: Use old backpack straps or thick black shoelaces.
Starry details
Silver glitter fabric paint or stick-on star gems to scatter across the black base layer.
DIY: Flick white acrylic paint onto the black fabric using an old toothbrush for a galaxy effect.
Rather not assemble it? See ready-made Planet costumes at Spirit Halloween ↗
How to put it together
- 1
Put on the black long-sleeve shirt and pants to establish the dark space background.
- 2
Cut a large circle out of your foam board or cardboard to serve as the main planet body, leaving a center hole wide enough to slip comfortably over your torso.
- 3
Paint the planet board using acrylic paints, adding realistic details like continental shapes for Earth or swirling gas bands for Jupiter.
- 4
If creating a ringed planet like Saturn, cut an outer ring from a separate piece of board and glue it at an angle around the main planet circle.
- 5
Measure and cut two equal lengths of black elastic ribbon to act as suspender straps.
- 6
Securely tape or glue the elastic straps to the inner rim of the planet board so the structure hangs hands-free from your shoulders.
- 7
Decorate your black clothing with silver glitter paint or star stickers to complete the cosmic backdrop.
Makeup & hair
Keep hair sleek and pulled back, or spray it with temporary silver glitter hairspray. For makeup, apply dark blue or black eyeshadow with silver glitter highlights on the cheekbones to mimic a starry galaxy.
Planet for couples, groups, kids & more
- couples
- One person dresses as a planet (like Earth) and the other dresses as the Sun or the Moon.
- group
- A group can dress as the entire solar system, with each person representing a different planet orbiting a central Sun.
- kids
- Use a painted umbrella or a simple sandwich-board style cardboard cutout for an easy, lightweight kids' version.
- Plus size
- Choose a stretchy black base layer and adjust the inner diameter of the cardboard planet ring for a comfortable, custom fit.
- pet
- A small black harness attached to a lightweight felt ring decorated with tiny foam spheres.
Tips
- Keep the cardboard or foam structure lightweight so it is easy to wear and walk through doorways.
- If attending an outdoor event, wear warm thermal layers underneath your black base clothing.
- Use metallic or glow-in-the-dark paint for the planetary rings to make the costume pop in low light.
Planet costume FAQ
- How do you make a comfortable DIY planet costume?
- The easiest way is to wear a black outfit as 'space' and wear a lightweight, painted cardboard disk around your waist supported by suspender straps.
- What materials are best for making planetary rings?
- Foam core board or sturdy corrugated cardboard are best because they are rigid enough to stay flat but light enough to wear comfortably.
- Can I make this costume last-minute?
- Yes, you can skip the 3D structure and simply paint a planet directly onto a solid-colored T-shirt or tape printed planet images to your clothes.
Did you know? Saturn's iconic rings are not solid; they are actually made of billions of individual ice particles, rocky debris, and cosmic dust.