How many pieces does the LEGO Costume Party with Unicorn & Fairy (42661-1) have?

The LEGO Costume Party with Unicorn & Fairy set (42661-1) contains 262 pieces. It was released in 2025 as part of the LEGO Friends theme.

How can I find missing parts for LEGO set 42661-1?

On BrickMissing you can check which parts from the LEGO Costume Party with Unicorn & Fairy (42661-1) you already own. Add your LEGO collection and we'll show exactly which of the 262 pieces you're missing and which you already have.

Can I build the LEGO Costume Party with Unicorn & Fairy with parts I already have?

Use BrickMissing's free parts checker to find out. Add LEGO sets you own to your collection and we'll cross-reference all 262 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Costume Party with Unicorn & Fairy from?

The LEGO Costume Party with Unicorn & Fairy (42661-1) belongs to the LEGO Friends theme. You can browse all Friends sets on BrickMissing to find more sets from this theme.

Costume Party with Unicorn & Fairy - View 9

Costume Party with Unicorn & Fairy

42661-1 Friends 2025 262 parts 17.4% catalog rarity Intermediate

Step into a world of friendship and imagination with the LEGO Friends Costume Party with Unicorn & Fairy (42661). This set is packed with storytelling inspiration for engaging role-play. Join Autumn as a bumblebee and Olly as a merman, ready for fun. Churro the cat, dressed as a magician, even has Leo as his white bunny assistant. Paisley shines in her fairy costume, while Periwinkle the horse transforms into a magnificent unicorn. The friends gather for an unforgettable party featuring a stage, DJ booth, and delicious snacks. Capture every moment at the photo booth, complete with exciting accessories for endless posing. Discover more adventures in the LEGO Friends universe.

View at LEGO.com € 39,99→ lego.com

42661-1

3D build progress

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Parts Inventory

🧱 262 parts

Showing the first 12 rows of the parts list (262 pieces in total). The full list loads automatically.

Color	Qty	LEGO price each
Unknown	1×	Check price → View
Red	1×	€0,08 View at LEGO → View
Dark Bluish Gray	1×	€0,16 View at LEGO → View
Black	1×	€0,40 View at LEGO → View
Bright Pink	2×	€0,17 View at LEGO → View
Medium Azure	2×	€0,17 View at LEGO → View
Medium Azure	8×	€0,06 View at LEGO → View
White	1×	€0,06 View at LEGO → View
Medium Azure	1×	€0,13 View at LEGO → View
Black	1×	€0,52 View at LEGO → View
Dark Pink	1×	€0,07 View at LEGO → View
Medium Azure	1×	€0,18 View at LEGO → View

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Catalog rarity

How common are the parts in Costume Party with Unicorn & Fairy?

17.4%High rarity

more commonless common

24 of 138 recorded part+color combinations appear in 3 or fewer sets in our catalog. This does not measure replacement availability or price.

Theme average

6.1%

All sets

6.7%

Least common in our catalog

Minidoll Torso · Light Nougat · only this set in our catalogFoil Sheet for Set 42661-1 - Fairy/Butte… · Unknown · only this set in our catalogFoil Sheet for Set 42661-1 - Insect Wings · Unknown · only this set in our catalog

How we calculate this →