Aliens Costumes

Why it is such a popular choice

An alien costume works because it asks so little and gives back so much. There's no famous face to imitate and no line to get exactly right, just a shape (the eyes, the green or grey skin, the antennae) that reads instantly from across a room. That looseness is the appeal. You can play it curious and gentle, or cold and unreadable, or full-on comic, and any of it lands.

It also scales in effort without losing impact. A full bodysuit and oversized head sell the character completely, but a simple hat or a pair of glasses does the job too, which makes it forgiving for last minute plans, work parties, or a kid who changes their mind about wanting to dress up an hour before the school parade.

Who it suits

Younger kids who like big, obvious costumes take to the toddler and plush styles fastest, since the padded suits and soft hats do most of the work and a child just has to wander around looking pleased with themselves. Shy kids often like aliens more than they expect to, because the character isn't really a performance so much as a strange, quiet little visitor, and there's no pressure to be loud in it.

Kids who love a bit of drama gravitate to the light up and oversized versions, where the reveal itself gets a reaction. Animal lovers and kids who like odd creatures generally enjoy the greener, more monster-adjacent looks, while a kid who wants to be taken seriously as "spooky" will lean toward the skeleton-style pieces instead of the round-eyed friendly ones.

For adults, it's a genuinely flexible costume. Oversized and plus size versions suit anyone who wants maximum visual impact with minimum fuss, since the padded shape does the talking. Fitted and glamorous takes suit adults who want an alien theme without losing their own silhouette. Couples can play an abduction scene with one person in a full costume and the other simply "caught" in an accessory like hands or glasses. Families can costume an entire age range in the same theme without anyone matching exactly, and groups can each pick a different type of alien and still look like they arrived together.

Types of aliens, and how to choose

• Classic green, big-eyed and friendly: the most recognisable version, good for kids who want to be liked rather than feared, and for anyone who wants the costume to start conversations rather than end them.
• Oversized and padded: a bigger, rounder silhouette that does a lot of visual work on its own. Good for kids and adults who want a dramatic entrance without needing to act much once they're in it.
• Grey, classic "visitor" style: a cooler, more mysterious look, often built around the head and hands rather than a full suit. Suits older kids and adults who prefer understated to loud.
• Light up styles: built for evening events, parades or anywhere the lights will actually be seen. Good for kids who want the flashiest option in the room.
• Skeleton and spooky takes: lean into the eerie, crash landed idea rather than the cute one. Suits anyone dressing for a Halloween-first crowd, or a kid who wants a bit of a fright factor.
• Glamorous or fitted adult versions: keep the alien theme through colour and accessories (antennae, cosmic prints) rather than bulk, good for adults who want to dance or mingle comfortably all night.
• Accessory-only pieces (hats, glasses, hands, socks): the easiest way in. Perfect for anyone layering the theme over their own clothes, for a quick costume the morning of an event, or for a group where only one or two people want the full look.

As a rule: go full suit for maximum transformation and a costume that reads from across a room, go padded or oversized for the biggest visual joke, and go accessory-only when comfort or speed matters more than total disguise.

Playing the part

Move slower than usual and let your head lead, tilting it before you turn your whole body, the way something unfamiliar with human joints might. Keep your hands loose and slightly curled rather than gripping things normally. Approach ordinary objects like they're new: hold a cup up to the light, sniff a snack before trying it, study a mirror like you've never seen your own reflection.

A flat, slightly delayed way of speaking sells the character better than a silly voice. Try short, oddly formal lines: "This substance is acceptable," or "Your customs are noted." For a group of kids, turn it into a quick game: whoever can hold the alien walk longest without laughing wins, or take turns "scanning" each other with a pointed finger and reporting one strange thing about being human.

Know when to drop it. A minute of full character at the door, during photos, or when someone new arrives gets the best reaction. Holding it constantly for hours tends to wear thin, so let it come and go rather than running it nonstop all evening.

Finishing touches

• Antennae or a headpiece that catches the light, since head height is what people notice first from across a room.
• Green or grey face paint or a hood that covers the hairline, so skin tone carries through cleanly instead of stopping at the neck.
• Gloved or oversized hands, which do more for the silhouette than almost any other single piece.
• One small prop, like a "scanner" gesture or a glowing accessory, to give your hands something purposeful to do.
• Comfortable footwear underneath, since the character depends on movement and a good, slow, deliberate walk.