Blue Costumes for Kids on Sale up to 90% Off: Poshmark

Weissman Deep Royal Blue Dance Costume

$25

Capezio medium velvet leotard black blue and silver EUC

$18

Medium

🌈✨“Rainbow High Vibes Only!” Amaya Costume XS 3T-4T✨🌈

$16 $36

XS (3T-4T)

LEGO Nexo Knight small 4-6 Halloween costume 2 pc set

$20

Small

Disney Cinderella Princess Halloween Dress - Blue and White size med

$25

Medium

Rubies DC Comics Supergirl Costume Dress Blue Red Tutu Glitter Kids Large

$22

Wonderful Alice Alice in Wonderland 0-6 month infant Halloween costume new nwt

$25 $30

Infant 0-6 months

Renaissance Costume Ball Dance Costume Performance Wear curtain call costumes 8

$20

US 8

NEW Infant Disney Frozen Princess Elsa Pretend Play Dress Up Costume 12-18 Month

$18

OS (Baby)

Wonder Woman Girls Halloween Costume Tutu Dress Medium 8-10 Headband Gauntlets

$32 $49

OS (Girl)

DC Comics Blue and Red Superman Kids Costume Stocking

$12

Carters Baby Unisex Dinosaur Costume 18 Months Padded Fleece Dragon Blue Outfit

$19

OS (Baby)

Pottery Barn Kids Baby Shark Costume Baby 0-6 Months Newborn Halloween Pretend

$49

0-6 Months

Costume Gallery large child two piece 70s galaxy galactic set EUC 💕 Halloween

$20 $50

Large

Trolls Poppy Dress Girls Size 10

$20

US 10

Weissman blue/gray performance costume 💕 LC

$15 $75

Vintage Halloween Masks Plastic

$28

OS (Girl)

Plume Navy Short-Sleeve Girls Scoop Neck Leotard

$22

US 6

Disney Cinderella Prestige Infant Costume Disguise Blue Dress 6-12 Months

$15

OS (Baby)

Rubies mermaid costume. Size small

Small

Disney Lilo & Stitch Blue Plush Gloves Mitts Paws Claws Costume Cosplay

$30

Unisex One Size

DC Comics Supergirl Costume Toddler 3-4 Blue Red Gold Glitter Tutu Dress NWT

$20

Girls Blue & White Sparkle Sequin Tutu Dress/Costume - Size S (4-6)

$19

Theatricals NWT Black Turquoise Crop Top Capri Leggings Dance Set Adult XS NWT

$47 $60

AXS

Simplicity Sewing Pattern Lot Nativity Costumes Kids Adults S-XL‎ Multicolor DIY

$20

OS (Baby)

DISGUISE DISNEY PRINCESS Girl's Cinderella Costume / Size: Medium 7/8

$18

OS (Girl)

Snow White Inspired Costume Dress Up Colorful Ruffled Baby Romper Size 6 Months

$16

6 month

Stay Puft Infant Costume - White and Blue‎

$15 $45

3-6 months

Last Minute Halloween Disney Mirabel Encanto Costume Dress Up Dress Children's S

$35

OS (Girl)

Girls Blue Sparkle Dance Costume

$24 $55

Snow white Blue & Yellow Princess Dress-Up Costume for Kids

$40

3 years +

Cosmic Witch Costume Costume Halloween Fancy Dress Medium

$10

OS (Boy)

NWT Marvel Thor Superhero Costume - Red, Gray, Yellow T-Shirt with Cape

$12 $30

Size l/xl

PJ Masks Catboy Superhero Halloween Treat Bucket Kids Blue Plastic Accessory

$12

OS (Baby)

UNICORN RAINBOW TULLE SKIRT HEADBAND COSTUME

$16

3+ (Girls)

Superman Kids Halloween Costume with Cape - Blue and Red

$15

Medium

Space Jam Tune Squad Costume, 6-12 months

$10

6-12 months

Disney Baby Cinderella Halloween Dress‎ Up Infant Costume Disguise Size 6+ Month

$25 $30

OS (Baby)

Girls Wonder Woman Velour‎ Star Dress Blue Long Sleeve Size 7

$14 $32

US 7

Marvel Kids Wonder Woman Girls Red and Blue Striped Outfit Size 6/6x

$16

OS (Girl)

Rubies Dorothy Costume Kids Medium Blue Gingham Sequin Wizard of Oz Movie Dress

$25

Weissman Black Bodice Dress with Blue, Pink, Yellow Checker Skirt

$12

Med

Girls Wonder Hero Costume Dress - Red, Blue & Gold

$10

3T-4T Gabby's Dollhouse Cakey Cat Costume With Headband

$27 $45

3T-4T

Spirit Gray and Blue Mouse Costume

$30

0 - 6 months

Disney Cinderella Deluxe Girls Costume Blue Princess Dress Size 4-6X NEW

$24

S (4-6X)

Cinderella Princess Costume Dress – Sparkly Blue Ball Gown

$50

OS (Girl)

🎉GREAT condition “My Little Pony” Rainbow Costume - Blue, Red, Yellow

$10 $20

Kids Blue Costumes