What is the easiest way to make a DIY alien costume?

The easiest DIY method is wearing an all-black or all-green outfit, adding a green headband with pipe-cleaner antennae, and wearing metallic sunglasses.

How do I make my alien makeup stay on all night?

Use a high-quality, water-activated body paint, apply it with a makeup sponge, and lock it in with a matte setting spray.

What shoes should I wear with an alien costume?

Metallic silver boots, shiny high-top sneakers, or regular shoes covered in silver duct tape work perfectly.

Skip the store: Wear a matching grey sweat suit and wrap bands of silver duct tape around the arms and legs. Wrap green pipe cleaners around a standard headband and hot glue green craft pom-poms to the tips. Cut a sleek visor shape out of shiny silver cardstock and attach it to an old pair of sunglasses.

AI-generated example

Alien Costume

An out-of-this-world look that is incredibly easy to assemble.

The classic space alien is a timeless, fun, and highly customizable costume choice for Halloween or sci-fi events. This iconic look blends futuristic retro-futurism with playful extraterrestrial elements. It typically features a metallic silver or neon green base paired with quirky antennae and cosmic accessories.

Difficulty: Easy
Time: ~20 min
Budget: $20–60

See yourself as Alien →What you need Buy the Alien costume

Try it on

See yourself as Alien

One clear photo of yourself; we render you in this costume — face untouched, full body, about 20 seconds.

Choose or drop a photo of yourselfJPG · PNG · HEIC

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.

Alien costume — Example look · AI-generated

You as Alien

Result

What you need for a Alien costume

Short on time? Buy it ready-made

Spirit Halloween sells the complete Alien costume — one box instead of 5 pieces.

Shop Alien at Spirit ↗

Metallic silver jumpsuit
A shiny, long-sleeve metallic silver bodysuit or jumpsuit to serve as the futuristic space suit base.
DIY: Wear a matching grey sweat suit and wrap bands of silver duct tape around the arms and legs.
Amazon
Alien antenna headband
A green or silver headband featuring two springy antennae topped with metallic pom-poms or glowing balls.
DIY: Wrap green pipe cleaners around a standard headband and hot glue green craft pom-poms to the tips.
Amazon
Futuristic wrap-around sunglasses
Silver, reflective, or neon green narrow visor sunglasses to give an otherworldly, high-tech look.
DIY: Cut a sleek visor shape out of shiny silver cardstock and attach it to an old pair of sunglasses.
Amazon
Neon green face paint
Water-activated green face paint or cosmetic glitter to add an extraterrestrial glow to exposed skin.
DIY: Mix green eyeshadow with a small amount of lotion or primer for a subtle, shimmering green tint.
Amazon
Silver boots or sneakers
Shiny silver footwear or metallic boot covers to complete the space-traveler aesthetic.
DIY: Wrap your everyday sneakers in silver aluminum foil or metallic duct tape.
Amazon

Rather not assemble it? See ready-made Alien costumes at Spirit Halloween ↗

How to put it together

1
Put on the metallic silver jumpsuit as your main space suit base.
2
Apply neon green face paint or cosmetic glitter to your face, neck, and hands for an alien skin tone.
3
Style your hair back or down, then slide on the alien antenna headband.
4
Put on the reflective, futuristic wrap-around sunglasses.
5
Lace up your silver boots or metallic-wrapped sneakers to finish the outfit.

Makeup & hair

Apply a vibrant green face paint base, blending it down the neck, and highlight your cheekbones with silver cosmetic glitter. Slick your hair back into a tight ponytail or space buns to keep the focus on your antennae and makeup.

Alien for couples, groups, kids & more

couples: One person dresses as the metallic alien while the other wears a retro NASA astronaut suit.
group: Have everyone wear different colored metallic bodysuits (silver, gold, pink, green) to form an alien invasion squad.
kids: Use a bright green fleece hoodie, hot-glue three large felt eyeballs to the hood, and add pipe-cleaner antennae.
Plus size: A metallic silver bomber jacket paired with black leggings and green accessories offers a comfortable, flexible fit.
pet: A simple green dog t-shirt paired with a lightweight, elastic-strap alien antenna headband.

More ways people search for this costume

The most-searched variations of “Alien costume”, and how this look adapts to each.

Alien costume diy: Skip the store: Wear a matching grey sweat suit and wrap bands of silver duct tape around the arms and legs. Wrap green pipe cleaners around a standard headband and hot glue green craft pom-poms to the tips. Cut a sleek visor shape out of shiny silver cardstock and attach it to an old pair of sunglasses.

Tips

Metallic fabrics can trap heat, so wear a breathable cotton undershirt if you plan to dance or walk a lot.
If using face paint, set it with a translucent setting powder or setting spray to prevent smudging on your collar.
Add glow sticks or LED wire to your headband or belt for high visibility during nighttime trick-or-treating.

Alien costume FAQ

What is the easiest way to make a DIY alien costume?: The easiest DIY method is wearing an all-black or all-green outfit, adding a green headband with pipe-cleaner antennae, and wearing metallic sunglasses.
How do I make my alien makeup stay on all night?: Use a high-quality, water-activated body paint, apply it with a makeup sponge, and lock it in with a matte setting spray.
What shoes should I wear with an alien costume?: Metallic silver boots, shiny high-top sneakers, or regular shoes covered in silver duct tape work perfectly.

Did you know? The classic 'Little Green Men' archetype of aliens dates back to 1950s science fiction novels and pulp magazines, which popularized the green-skinned, antenna-bearing extraterrestrial.