What color is Lagoona Blue's skin?

Lagoona has a very pale blue or seafoam green complexion, which you can recreate using water-activated body paint.

How do you make Lagoona Blue's fins?

You can cut fins out of stiff teal felt or translucent plastic sheets, then sew or hot-glue them to the sides of your leggings and sleeves.

What accessories does Lagoona Blue wear?

She typically wears a pink flower or seashell hair clip, a black bead necklace, and sometimes carries a fishbowl purse.

AI-generated example

Lagoona Blue Costume

Make a splash with this sea-monster chic Monster High look.

As the daughter of the Sea Monster, Lagoona Blue is one of Monster High's most popular characters, loved for her sporty, aquatic-chic style. Her signature look blends beachwear with school fashion, featuring scales, fins, and pastel colors. This guide helps you assemble her classic outfit, complete with her iconic blue-and-blonde hair.

Difficulty: Medium
Time: ~60 min
Budget: $45–120

See yourself as Lagoona Blue →What you need Buy the Lagoona Blue costume

Try it on

See yourself as Lagoona Blue

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.

Lagoona Blue costume — Example look · AI-generated

You as Lagoona Blue

Result

What you need for a Lagoona Blue costume

Short on time? Buy it ready-made

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

Shop Lagoona Blue at Spirit ↗

Teal and pink scale-pattern romper or dress
A sleeveless romper or mini dress featuring a shiny fish-scale print in teal, pink, and black.
DIY: Use a plain teal romper and draw scale patterns using pink and black fabric markers.
Amazon
Cropped pink hoodie or jacket
A bright pink cropped zip-up hoodie, ideally with sheer or mesh sleeves to mimic fins.
DIY: Cut the sleeves off a pink hoodie and sew sheer blue mesh fabric in their place.
Amazon
Blue mesh leggings with fins
Light blue or teal sheer leggings, featuring attached fabric fins on the calves.
DIY: Buy blue fishnet tights and hot-glue stiff felt fins to the outer sides of the calves.
Amazon
Seashell hair clip
A large pink or yellow flower hair clip with a small plastic seashell or starfish in the center.
DIY: Glue a real seashell and a silk pink flower onto a standard alligator hair clip.
Amazon
Platform wedge sandals
Strappy platform sandals or wedges in a bright color like pink, blue, or yellow.
DIY: Wear any bright summer wedges and wrap blue ribbon around your ankles.
Amazon

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

How to put it together

1
Put on the blue mesh leggings first, ensuring the attached calf fins point outward.
2
Layer the teal and pink scale-pattern romper or dress over the leggings.
3
Put on the cropped pink hoodie, leaving it partially unzipped to show off the romper underneath.
4
Style your hair into loose, beachy waves, pinning one side back with the seashell hair clip.
5
Apply the pale blue face makeup and draw small teal scales on your cheekbones.
6
Step into your platform wedge sandals and adjust any fin accessories so they stand out.

Makeup & hair

Style your hair in voluminous, beachy blonde waves with bright blue streaks, pinned back on one side with a pink flower clip. For makeup, use a pale blue or seafoam face paint base, add pink eyeshadow, and use a stencil to dab teal scale patterns onto your cheekbones and temples.

Lagoona Blue for couples, groups, kids & more

couples: Pair up with Gillington 'Gil' Webber in a sporty varsity jacket and a clear dome helmet.
group: Gather friends to dress as the core Monster High ghouls, including Frankie Stein, Draculaura, and Clawdeen Wolf.
kids: Use a pre-made Lagoona Blue costume set featuring a comfortable printed jumpsuit with attached mesh fins.
Plus size: Opt for a stretchy scale-print skater dress paired with a bright pink cardigan and high-waisted blue fishnets.
pet: Dress your pet in a pink and teal striped dog sweater with a small plush starfish attached to the collar.

Tips

Use hairspray or fabric stiffener on your DIY leg fins so they don't sag while walking.
If you are trick-or-treating in cold weather, swap the mesh leggings for thick teal tights.
For photos, pose with your hands on your hips to show off the arm fins and sleeve details.
Set your blue face makeup with a translucent powder so it doesn't smudge onto your pink hoodie.

Lagoona Blue costume FAQ

What color is Lagoona Blue's skin?: Lagoona has a very pale blue or seafoam green complexion, which you can recreate using water-activated body paint.
How do you make Lagoona Blue's fins?: You can cut fins out of stiff teal felt or translucent plastic sheets, then sew or hot-glue them to the sides of your leggings and sleeves.
What accessories does Lagoona Blue wear?: She typically wears a pink flower or seashell hair clip, a black bead necklace, and sometimes carries a fishbowl purse.

Did you know? Lagoona Blue is an exchange student at Monster High, hailing from the Great Barrier Reef in Australia, which is why she speaks with a distinct Australian accent in the animated series.