Under the Sea mermaid princess costume set for girls with purple and aqua mermaid dress, red wig, tiara, wand and jewelry

Under the Sea Princess Mermaid Dress Costume & Accessory Set

Ariel Deluxe Set / 2T
$57.00
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Under the Sea mermaid princess costume set for girls with purple and aqua mermaid dress, red wig, tiara, wand and jewelry

Under the Sea Princess Mermaid Dress Costume & Accessory Set

$57.00
Style:Ariel Deluxe Set
Size:
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★★★★★ 4.92/5 from 25,000+ reviews
Loved by thousands of families since 2018

🧜♀️ Under the Sea Princess Mermaid Dress Costume & Accessory Set

Dive into a magical underwater adventure! The Under the Sea Princess Mermaid Dress Costume & Accessory Set is made for little dreamers who love shimmering seashells, mermaid magic, sparkling accessories, and enchanting princess dress-up.

Featuring a beautiful purple and aqua mermaid-style dress with a shimmering shell bodice, ruffled fin details, and a flowing mermaid-tail silhouette, this deluxe set comes with coordinating accessories to create a complete under-the-sea princess look.


🧜♀️ What’s Included

  • Mermaid princess dress
  • Red character-style wig
  • Jeweled princess tiara
  • Star wand accessory
  • Matching necklace
  • Coordinating bracelet
  • Matching earrings
  • Starfish hair accessory
  • Complete under-the-sea princess dress-up look

✨ Dress Details

  • Lavender and aqua mermaid-inspired color palette
  • Shimmering shell-style bodice detail
  • Sparkling sequin center panel
  • Sheer iridescent ruffled shoulder accents
  • Layered waist ruffle with aqua and purple trim
  • Fitted mermaid-style skirt
  • Printed seashell, starfish, and mermaid details
  • Full layered ruffle hem for a dramatic mermaid-tail finish

🐚 Perfect For

  • Halloween costumes
  • Mermaid-themed birthday parties
  • Under-the-sea celebrations
  • Princess parties
  • School character days
  • Costume parties
  • Birthday photoshoots
  • Mermaid photoshoots
  • Dress-up and imaginative play

💜 Important Details

  • Please review the size chart before ordering
  • Use your child’s actual measurements rather than age alone when choosing a size
  • Shoes and photography props are not included
  • Accessories are intended for costume and supervised dress-up use
  • Colors may vary slightly due to lighting and screen settings
  • Measurements may vary slightly due to manual measuring
🐚💜 A sparkling under-the-sea princess set made for magical mermaid adventures, ocean dreams, royal wishes, and picture-perfect fairytale moments. ✨

🧜♀️ Under the Sea Princess Mermaid Dress Size Chart

Measurements below are garment measurements. For the best fit, compare your child’s bust and desired dress length with the chart rather than selecting by age alone.

US Size Dress Length Bust
2T 27.56" (70 cm) 21.26" (54 cm)
3T 31.50" (80 cm) 22.83" (58 cm)
4T 35.43" (90 cm) 24.41" (62 cm)
5–6T 37.40" (95 cm) 25.20" (64 cm)
7–8T 39.37" (100 cm) 25.98" (66 cm)
🐚 Fit Tip: This is a longer mermaid-style dress, so we recommend choosing primarily by your child’s bust measurement and desired dress length. If your child falls between two sizes or you would like additional room for comfort and growth, choose the larger size.

Why Families Love Lolli & Lace

Creating magical childhood memories, one beautiful outfit at a time.

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Boutique Quality You Can Feel

Every costume and dress is thoughtfully selected with beautiful details, soft fabrics, and enchanting designs that children love to wear.

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Complete Looks Made Easy

Many of our costumes include matching accessories so your little one is ready for magical adventures right out of the box.

Designed for Special Memories

Perfect for Halloween, birthdays, princess parties, school events, vacations, photoshoots, and everyday imaginative play.

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Loved by Thousands of Families

Parents choose Lolli & Lace for unique styles, comfortable fits, and memorable costumes children never want to take off.

"My daughter absolutely loved her costume! The quality was beautiful, the fit was perfect, and she received compliments everywhere she went."

★★★★★

Happy Lolli & Lace Customer

✨ Boutique Styles
🚚 Fast Shipping
🎀 Magical Details
💖 Family Owned

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Frequently Asked Questions

The set includes a purple and aqua mermaid princess dress, red mermaid-style wig, jeweled tiara, star wand, and coordinating jewelry accessories for a complete under-the-sea look.
Yes. This girls mermaid costume set includes the dress and coordinating accessories, making it easy to create a complete mermaid princess outfit without purchasing the main accessories separately.
The costume is available in sizes 2T, 3T, 4T, 5–6T, and 7–8T. Please use the product size chart and compare the dress measurements before ordering.
Yes. The colorful mermaid tail dress, red wig, tiara, wand, and jewelry make this a fun girls Halloween costume for anyone wanting an under-the-sea princess look.
Absolutely. The costume is a fun choice for mermaid birthday parties, under-the-sea celebrations, princess parties, photoshoots, and other special occasions.
Yes. A long red mermaid-inspired wig is included to coordinate with the purple and aqua costume.
Yes. The set includes a colorful jeweled tiara designed to complete the magical sea-princess look.
Yes. Coordinating mermaid-inspired jewelry accessories are included with the costume set.
Yes. The set includes a coordinating star-shaped wand with decorative tulle and sparkling details.
The dress features a magical combination of purple, aqua blue, turquoise, iridescent accents, and shimmering details inspired by an underwater princess.
The costume features a fitted mermaid-style silhouette with a purple bodice, seashell-inspired detailing, aqua mermaid skirt, and a dramatic layered ruffle at the bottom that creates a fin-inspired appearance.
Use your child's measurements rather than age alone. The available sizes range from 2T through 7–8T, and the product size chart provides dress length and bust measurements for comparison.
Yes. In addition to Halloween and parties, the mermaid princess costume can be used for imaginative play, princess dress-up, themed events, photoshoots, and other magical adventures.
Yes. The aqua mermaid tail, seashell-inspired bodice, red wig, tiara, jewelry, and star wand make it especially well suited for mermaid, ocean, princess, and under-the-sea themed celebrations.
This mermaid costume is perfect for Halloween, mermaid birthday parties, under-the-sea parties, princess events, school costume days, photoshoots, dress-up, pretend play, vacations, and themed celebrations.

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