Fun Sci-Fi Costumes for Kids

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Main Content
Oversized Alien Costume for Kids

Oversized Alien Costume for Kids

$49.99 - $79.99
Friendly Alien Kid's Costume

Friendly Alien Kid's Costume

$59.99 - $79.99
Kid's Inflatable Alien Costume

Kid's Inflatable Alien Costume

$49.99$39.99
Alien Invader Kid's Costume

Alien Invader Kid's Costume

$39.99$29.99 - $34.99
Supernova Surfer Alien Kid's Costume

Supernova Surfer Alien Kid's Costume

$49.99$19.99 - $29.99
NASA Blue Jumpsuit Costume for Kids

NASA Blue Jumpsuit Costume for Kids

$49.99$29.99 - $34.99
Deluxe Astronaut Costume for Kid's

Deluxe Astronaut Costume for Kid's

$69.99
Galactic Astronaut Girl's Costume

Galactic Astronaut Girl's Costume

$54.99$14.99 - $24.99
Kid's Starstruck Astronaut Costume | Astronaut Costumes

Kid's Starstruck Astronaut Costume | Astronaut Costumes

$59.99$29.99
Toddlers Alien Costume

Toddlers Alien Costume

$29.99
Glow Alien Morphsuit Kid's Costume | Alien Costumes

Glow Alien Morphsuit Kid's Costume | Alien Costumes

$29.99$24.99
Friendly Alien Toddler Costume

Friendly Alien Toddler Costume

$49.99
Blue Space Alien Kid's Costume | Alien Costumes

Blue Space Alien Kid's Costume | Alien Costumes

$39.99
Silly Space Infant Alien Costume

Silly Space Infant Alien Costume

$39.99$34.99 - $49.99
Silly Space Alien Toddler Costume

Silly Space Alien Toddler Costume

$49.99 - $59.99
Galactic Alien Kiddo Girl's Costume | Alien Costumes

Galactic Alien Kiddo Girl's Costume | Alien Costumes

$49.99$29.99
Deluxe Astronaut Costume for a Toddler

Deluxe Astronaut Costume for a Toddler

$59.99
Full Moon Kid's Costume | Solar System Costumes

Full Moon Kid's Costume | Solar System Costumes

$49.99
Kids Astronaut Costume | Uniform Halloween Costumes

Kids Astronaut Costume | Uniform Halloween Costumes

$69.99 - $79.99
Girl's Galactic Astronaut Toddler Costume

Girl's Galactic Astronaut Toddler Costume

$49.99$17.99 - $24.99
Toddler Disney and Pixar Toy Story Alien Costume

Toddler Disney and Pixar Toy Story Alien Costume

$49.99 - $59.99
Disney and Pixar Toy Story Alien Costume for Kids | Disney Costumes

Disney and Pixar Toy Story Alien Costume for Kids | Disney Costumes

$59.99
Kid's Astronaut Costume Dress | Astronaut Costumes

Kid's Astronaut Costume Dress | Astronaut Costumes

$39.99$29.99 - $39.99
Kid's Glorious Galaxy Jumpsuit Costume | Solar System Costumes

Kid's Glorious Galaxy Jumpsuit Costume | Solar System Costumes

$49.99$39.99 - $49.99
Kid's Classic White Astronaut Costume | Astronaut Costumes

Kid's Classic White Astronaut Costume | Astronaut Costumes

$24.99$19.99
Outer Space Cutie Toddler Costume

Outer Space Cutie Toddler Costume

$49.99$24.99
Space Astronaut Costume for Infants | Astronaut Costumes

Space Astronaut Costume for Infants | Astronaut Costumes

$39.99
Toddler Disney and Pixar Toy Story Alien Costume for Girls

Toddler Disney and Pixar Toy Story Alien Costume for Girls

$49.99
Kid's Cozy Astronaut Jumpsuit Costume | Astronaut Costumes & Accessories

Kid's Cozy Astronaut Jumpsuit Costume | Astronaut Costumes & Accessories

$29.99$14.99
Ready for Space Kid's Astronaut Costume | Astronaut Costumes

Ready for Space Kid's Astronaut Costume | Astronaut Costumes

$39.99$17.99
Kid's Transformers Starscream Costume

Kid's Transformers Starscream Costume

$89.99$59.99 - $89.99
Star Wars Jedi Robe for Kids | Star Wars Costumes

Star Wars Jedi Robe for Kids | Star Wars Costumes

$34.99$7.99
Starstruck Astronaut Girl's Toddler Costume | Astronaut Costumes

Starstruck Astronaut Girl's Toddler Costume | Astronaut Costumes

$59.99$49.99 - $59.99
Outer Space Cutie Costume for Girls

Outer Space Cutie Costume for Girls

$59.99$39.99
Star Wars Child Purge Stormtrooper Costume | Kid's Stormtrooper Costumes

Star Wars Child Purge Stormtrooper Costume | Kid's Stormtrooper Costumes

$49.99
White Astronaut Jumpsuit Costume for Kids | Astronaut Costumes

White Astronaut Jumpsuit Costume for Kids | Astronaut Costumes

$29.99$24.99 - $29.99
Orange Astronaut Jumpsuit Costume for Kids | Astronaut Costumes

Orange Astronaut Jumpsuit Costume for Kids | Astronaut Costumes

$39.99
Kid's Back to the Future Marty McFly Costume

Kid's Back to the Future Marty McFly Costume

$59.99$49.99 - $59.99
Orange Astronaut Jumpsuit Toddler Costume

Orange Astronaut Jumpsuit Toddler Costume

$29.99
Light Up The Mandalorian Kid's Costume | Mandalorian Costumes

Light Up The Mandalorian Kid's Costume | Mandalorian Costumes

$69.99$39.99 - $69.99
Kid's Guardians of the Galaxy Star Lord Costume | Marvel Costumes

Kid's Guardians of the Galaxy Star Lord Costume | Marvel Costumes

$49.99
White Astronaut Jumpsuit Toddler Costume | Kid's Astronaut Costumes

White Astronaut Jumpsuit Toddler Costume | Kid's Astronaut Costumes

$29.99$24.99 - $29.99
Back to the Future Doc Brown Costume | Kid's Costumes

Back to the Future Doc Brown Costume | Kid's Costumes

$39.99$29.99 - $39.99
Star Wars Value The Mandalorian Costume for Kids | Star Wars Costumes

Star Wars Value The Mandalorian Costume for Kids | Star Wars Costumes

$29.99$10.99
Toy Story Infant Alien Costume | Kid's Toy Story Costumes

Toy Story Infant Alien Costume | Kid's Toy Story Costumes

$39.99
Classic Toddler Orange Astronaut Costume | Kid's Astronaut Costumes

Classic Toddler Orange Astronaut Costume | Kid's Astronaut Costumes

$24.99
Child Classic Orange Astronaut Costume | Kid's Astronaut Costumes

Child Classic Orange Astronaut Costume | Kid's Astronaut Costumes

$24.99
Classic Toddler White Astronaut Costume | Astronaut Costumes

Classic Toddler White Astronaut Costume | Astronaut Costumes

$24.99$19.99

About Fun Sci-Fi Costumes for Kids

Ignite your child's imagination with our exciting collection of fun sci-fi costumes for kids at HalloweenCostumes.com. Perfect for Halloween, themed parties, or imaginative play, these costumes transport young adventurers to galaxies far away. Featuring vibrant colors, playful designs, and comfortable fits, our selection allows kids to embody their favorite extraterrestrial beings, brave astronauts, and quirky scientists. Each costume is crafted with attention to detail, ensuring that your little ones not only look fantastic but also feel confident as they embark on their interstellar journeys. From oversized alien suits to sleek astronaut jumpsuits, there's a costume to suit every budding space explorer's dreams.

Our fun sci-fi costumes for kids are designed to inspire creativity and encourage role-playing, making them ideal for both group activities and solo adventures. With options that range from whimsical aliens to daring space travelers, these costumes are perfect for sparking conversations and imaginative scenarios. Each outfit is made with quality materials that prioritize comfort, allowing kids to move freely while they explore their new identities. Whether they want to save the universe or discover new planets, our collection provides the perfect attire for every sci-fi adventure. At HalloweenCostumes.com, we believe that every child should have the opportunity to explore their wildest dreams, and our fun sci-fi costumes are here to help them do just that.

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