LEGO Friends Costume Party with Unicorn & Fairy (42661) – Interactive Pretend Play Set

Turn birthday moments into magical stories with LEGO Friends Costume Party with Unicorn & Fairy (42661). This 261-piece set invites kids aged 6 and up to build, imagine, and celebrate with friends. The party world comes alive with a DJ booth, a mini stage, and bright balloon backdrops, plus a bubble-filled slushie machine that adds a playful sensory touch to pretend celebrations. As children assemble Periwinkle the horse into a majestic unicorn with a glittery horn, their friends don sparkling costumes—Paisley the fairy, Autumn the striped bumblebee, Olly the vibrant mermaid, and Leo the bunny magician. Even Churro the cat joins the fun. The accessories—from sparkly cakes to a wand and a trident—invite quick storytelling, pose-worthy photos, and dynamic character moments.

DIMENSIONS: the party scene measures roughly 8 cm (3 in) high, 25 cm (9.5 in) wide, and 5 cm (2 in) deep, offering a compact display that can be reimagined in countless ways.

What you can build and explore

• Transform Periwinkle into a unicorn with a glitter horn, unlocking imaginative roleplay.
• Dress up Paisley as a shimmering fairy and bring party costumes to life.
• Imagine Autumn as a striped bumblebee, Olly as a mermaid, and Leo as a bunny magician.

Designed for shared play and creative growth

• Promotes imaginative storytelling and collaborative interactions through group scenes.
• Encourages cooperative building and turn-taking during party-planning moments.
• Supports fine motor development as kids arrange balloons, cakes, props, and costumes.
• Offers flexible play with repeatable party themes and evolving character moments.

The LEGO Builder app adds a modern twist with easy-to-follow 3D instructions and progress tracking, helping younger builders stay engaged and confident as they assemble the set.

This set makes a delightful gift for kids who love unicorns, dress-up, and friendship-themed pretend play. With 261 pieces and a vibrant party atmosphere, children can revisit new scenes again and again, extending the fun beyond a single occasion.