How do you make a quick DIY alien costume?

Wear an all-black or neon green outfit, add a silver alien antenna headband made from pipe cleaners and foil, and apply metallic face glitter.

What should the astronaut wear under the jumpsuit?

Lightweight, breathable clothes like a t-shirt and shorts, as polyester flight suits can trap heat indoors.

Can this work as a last-minute costume?

Yes! One person wears white clothes with a printed NASA logo taped on, and the other wears metallic clothing with a quick DIY headband.

AI-generated example

Alien and Astronaut

An out-of-this-world pairing that is simple to coordinate and customize.

The Alien and Astronaut costume is a classic, space-themed pairing that is perfect for couples, best friends, or families. One person wears a sleek, high-tech NASA-style spacesuit, while the other goes full extraterrestrial with metallic fabrics, neon colors, and alien antennae. It is a highly customizable look that can range from realistic and detailed to quick, budget-friendly DIY.

Difficulty: Easy
Time: ~45 min
Budget: $40–120

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Alien and Astronaut costume — Example look · AI-generated

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Result

40 Alien and Astronaut costume ideas

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What you need for a Alien and Astronaut costume

Astronaut Jumpsuit
A white or orange full-body flight suit featuring space agency patches and zipper details.
DIY: Wear a white long-sleeve shirt and white cargo pants, then tape printed NASA logos to the chest.
Amazon
Astronaut Helmet or Cap
A white plastic astronaut helmet with a tinted visor, or a black NASA baseball cap for comfort.
DIY: Wear a white baseball cap with a space patch pinned to the front.
Amazon
Alien Metallic Outfit
A shiny silver, green, or purple metallic dress, skirt, or bodysuit to establish the sci-fi look.
DIY: Wear an oversized neon green t-shirt or metallic silver leggings from your closet.
Amazon
Alien Antenna Headband
A silver or neon green headband featuring springy metallic pom-poms or glowing alien eyes.
DIY: Wrap silver pipe cleaners around a plain headband and attach foil-covered foam balls to the ends.
Amazon
Space Boots
White boots or silver metallic shoe covers to complete the futuristic aesthetic.
DIY: Wrap your regular sneakers in aluminum foil for a quick, shiny space-boot effect.
Amazon

How to put it together

1
For the Astronaut: Step into the flight suit, zip it up, and adjust the collar and cuffs.
2
Add the NASA baseball cap or carry the astronaut helmet under your arm for easy socializing.
3
For the Alien: Put on the metallic silver or neon green base outfit.
4
Slide on the alien antenna headband, positioning it securely in your hair.
5
Coordinate your footwear by putting on white sneakers, silver boots, or foil-wrapped shoe covers.
6
Apply optional face paint or glitter to the alien partner to enhance the extraterrestrial vibe.

Makeup & hair

The astronaut can keep hair simple and natural. The alien can go wild with metallic silver eyeshadow, neon green face paint accents, body glitter on the cheekbones, and space buns or a sleek high ponytail.

Alien and Astronaut for couples, groups, kids & more

couples: One person goes as a retro NASA astronaut in a white suit, while the other wears a shiny silver metallic dress with green alien makeup.
group: Add more astronauts in orange flight suits and a whole squad of colorful aliens in green, purple, and pink metallic outfits.
kids: A toddler in a plush astronaut romper paired with an older sibling wearing a green alien hoodie with felt eyes sewn onto the hood.
Plus size: Comfortable stretch-fabric metallic leggings paired with a loose neon green tunic for the alien, and a roomy, elastic-waist flight suit for the astronaut.
pet: A small dog wearing a silver 'space capsule' harness or a simple green alien headband.

Tips

Helmets can get hot and muffle your voice; opt for a NASA cap or carry the helmet as a prop for parties.
Use body glitter gel for the alien look—it stays put better than loose glitter and is easier to wash off.
If trick-or-treating in cold weather, the astronaut suit easily layers over warm thermals, while the alien can wear silver leggings and a metallic puffer jacket.

Alien and Astronaut costume FAQ

How do you make a quick DIY alien costume?: Wear an all-black or neon green outfit, add a silver alien antenna headband made from pipe cleaners and foil, and apply metallic face glitter.
What should the astronaut wear under the jumpsuit?: Lightweight, breathable clothes like a t-shirt and shorts, as polyester flight suits can trap heat indoors.
Can this work as a last-minute costume?: Yes! One person wears white clothes with a printed NASA logo taped on, and the other wears metallic clothing with a quick DIY headband.

Did you know? The 'little green men' trope for aliens dates back to 20th-century science fiction, while modern alien costumes often lean into shiny, metallic 'Y2K' space-babe aesthetics.