Blue Monster Baby Costume, Plush Romper

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Realms&Wonders Blue Monster Baby Costume

$44.63

Made for little adventurers: soft, cozy and crafted with care by Realms&Wonders.

Choose your character: Blue Monster

Style: Blue Monster

Blue Monster

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-15%Buy 2+ costumes, save 15%
Mix any styles — applied automatically at checkout.

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Sizes differ slightly between styles, so please check the chart for the style you choose. If your little one is between sizes or on the heavier side, we recommend sizing up. Measurements may vary by 1–2 cm.

Black Cat / Blue Monster / Yellow Buddy

Size	Age	Length	Chest
6M	3–6 months	39 cm / 15.4 in	56 cm / 22.0 in
9M	6–9 months	41.5 cm / 16.3 in	59 cm / 23.2 in
12M	9–12 months	44 cm / 17.3 in	62 cm / 24.4 in
18M	12–18 months	46.5 cm / 18.3 in	65 cm / 25.6 in
24M	18–24 months	49 cm / 19.3 in	68 cm / 26.8 in

Dalmatian / Green Ogre

Size	Age	Baby height	Baby weight
3M	1–4 months	59–66 cm / 23–26 in	5.5–7.5 kg / 12–16.5 lb
9M	5–11 months	67–73 cm / 26.5–28.5 in	7.6–9.5 kg / 16.8–21 lb
12M	12–17 months	74–80 cm / 29–31.5 in	9.6–11.5 kg / 21–25.4 lb
18M	18–23 months	81–90 cm / 32–35.5 in	11.6–14 kg / 25.6–31 lb
24M	2–2.5 years	91–98 cm / 36–38.5 in	14.1–16.5 kg / 31–36.4 lb
3T	2.5–3 years	99–108 cm / 39–42.5 in	16.6–19 kg / 36.6–42 lb

One-Eyed Monster

Sized by age: 6–9M, 9–12M, 12–18M, 18–24M, 2–3Y. Choose your baby's current age and size up if in doubt.

Still not sure? Send us a message with your baby's age, height and weight, and we'll help you pick.

Realms&Wonders Blue Monster Baby Costume

$44.63

Availability: In stock

Categories: Baby Costumes

Realms&Wonders Blue Monster Baby Costume

Meet your little monster. A fuzzy turquoise romper with purple spots, soft horns and a sweet monster face on the hood — the cuddliest creature at every Halloween party, photo shoot and family get-together.

Why parents love it

Super soft & warm – cozy plush fleece that keeps baby comfy on chilly days.
Monster details – purple spots, soft 3D horns and matching spotted leg covers.
One-piece romper – quick to put on, no fussing with separate pieces.
Room to move – relaxed fit lets little ones crawl, play and explore freely.

What’s included

1 hooded romper + 1 pair of matching leg covers.

Size guide

If your baby is between sizes or on the heavier side, we recommend sizing up. Measurements may vary by 1–2 cm.

Size	Length	Chest
3-6M	39 cm / 15.4 in	56 cm / 22.0 in
6-9M	41.5 cm / 16.3 in	59 cm / 23.2 in
9-12M	44 cm / 17.3 in	62 cm / 24.4 in
12-18M	46.5 cm / 18.3 in	65 cm / 25.6 in
18-24M	49 cm / 19.3 in	68 cm / 26.8 in

Care & safety

Machine wash cold on a gentle cycle or hand wash; do not bleach; hang to dry.
Always supervise your child while wearing the costume. Not intended as sleepwear.

More styles: Yellow Buddy · Black Cat · Dalmatian · Green Ogre · One-Eyed Monster

Buy 2 or more costumes and save 15% — perfect for twins, siblings and best friends.