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42661 LEGO Friends Costume Party with Unicorn & Fairy thumbnail image

42661 LEGO Friends Costume Party with Unicorn & Fairy
Images 6Description 
42661 LEGO Friends Costume Party with Unicorn & Fairy
  • Costume Party with Unicorn & Fairy thumbnail
  • Costume Party with Unicorn & Fairy thumbnail
  • Costume Party with Unicorn & Fairy thumbnail
  • Costume Party with Unicorn & Fairy thumbnail
  • Costume Party with Unicorn & Fairy thumbnail
  • Costume Party with Unicorn & Fairy thumbnail

LEGO 42661 Costume Party with Unicorn & Fairy is a Friends set currently available at retail for $39.99. Current new-sealed secondary market prices range from $39 to $47, with the average below MSRP at $37. All 4 mini-doll figures are exclusive to this set.

Forecast Model

This represents the expected annual growth (CAGR) based solely on a forecast model.
LEGO 42661 Costume Party with Unicorn & Fairy is a Friends General set released in 2025, containing 261 pieces and 4 mini-dolls. It includes Autumn, Olly, Leo, and Paisley, plus a cat figure named Churro and a horse figure named Periwinkle. The characters can dress in costumes such as a bumblebee, merman, fairy, white bunny, and magician, with Periwinkle outfitted as a unicorn. The build features a party stage, DJ booth, snacks area, and a photo booth with accessories, and it launched in June 2025 outside North America and in August 2025 in North America.

Once retired, the expected annual growth will be close to 2% after the second year, valuing the set between $42 and $43 shortly after it is retired.
All regions

For Sale (New/Sealed)

This chart shows the sales listing trends of 42661 Costume Party with Unicorn & Fairy.
 (VN) Friends Costume Party with Unicorn & Fairy Pretend Play Building Toy SEALED $31.99
-20.0%
(US) NEW Lego Friends 42661 Costume Party with Unicorn & Fairy
BrickEconomy Choice
$32.00
-20.0%
(AU) Friends Costume Party with Unicorn and Fairy (42661) NEW Sealed $35.24
-11.9%
(US) Friends Costume Party with Unicorn & Fairy Pretend Play Building Toy $35.67
-10.8%
(US) Friends Costume Party with Unicorn & Fairy 42661 NEW In The Box $38.00
-5.0%
(US) Friends Costume Party with Unicorn & Fairy 42661 NEW In The Box $38.00
-5.0%
(US) Friends Costume Party with Unicorn & Fairy 42661 $39.99
(US) Friends Costume Party with Unicorn & Fairy 42661 NEW In The Box $39.99
(US) BrickLink store Bricksville Edmond $39.99
(US) Official LEGO Costume Party with Unicorn & Fairy $39.99
(US) NISB $40.00
(US) BrickLink store Kitchen Sync $40.00
(US) LEGO Friends Costume Party with Unicorn & Fairy 42661 [New Toy] Brick $41.65
+4.2%
(HU) BrickLink store brick350 $43.66
+9.2%
Show 10 more listings

Mini-doll figures

Costume Party with Unicorn & Fairy contains 4 mini-doll figures. All 4 mini-doll figures are exclusive to this set.
frnd850
Autumn
Mini-doll in a Friends Autumn Bumblebee Costume - frnd850
Exclusive
Value $8.38
frnd852
Leo
Leo from Friends wearing a bunny / rabbit costume - frnd852
Exclusive
Value $6.61
frnd851
Olly
Olly from Friends wearing a merman costume - frnd851
Exclusive
Value $7.14
frnd849
Paisley
Paisley from Friends wearing a fairy costume - frnd849
Exclusive
Value $8.10

Sets in Friends / General

42686 Fun Indoor Playground

Theme / Subtheme Friends / General
Year 2026
Pieces / Mini-doll figures 668 / 3
Availability Retail
42686 LEGO Friends Fun Indoor Playground
Retail $59.99
Available at retail

42681 Axolotl Adventure Boat

Theme / Subtheme Friends / General
Year 2026
Pieces / Mini-doll figures 95 / 2
Availability Retail
42681 LEGO Friends Axolotl Adventure Boat
Retail $9.99
Available at retail

42675 Unicorn Cake Delivery Car

Theme / Subtheme Friends / General
Year 2026
Pieces / Mini-doll figures 67 / 2
Availability Retail
42675 LEGO Friends Unicorn Cake Delivery Car
Retail $9.99
Available at retail

30721 Flower Stand with Roses

Theme / Subtheme Friends / General
Year 2026
Pieces / Mini-doll figures 55 / 1
Availability Retail
30721 LEGO Friends Flower Stand with Roses
Retail $4.99
Available at retail

My Collection

Costume Party with Unicorn & Fairy Reviews

12 reviews
4.8
Collectors
Investors
BrickEconomy Expert Review
“The LEGO Friends costume party set offers great value for fans of minidolls, featuring four of the core characters in unique, detailed outfits and even including costumed animals like Churro and Periwinkle. While the build elements are secondary, colorful features like a dessert table, slushie machine, and DJ booth enhance the festive atmosphere. The set leans heavily on the appeal of its figures, and though the price may feel high for the modest builds, the creativity and variety in the minidolls help justify the cost.”
Brickset
“The minidolls are terrific, but there is a build associated with this set, so we'll take a look at that. First up is a photobooth, which makes total sense since of course the Friends will want to take pictures! An assortment of accessories is close by, though I'm not sure... More why they're needed, since the Friends have all come in costume!”
Full review at brickset.com

About Friends General

LEGO Friends sets are designed to appeal to girls and were introduced in 2012. The Friends theme includes mini-doll figures, which are around the same size as minifigures but are more realistic. LEGO Friends pieces are fully compatible with all LEGO System bricks and sets include pieces in pink and purple color schemes and depict scenes from suburban life set in the fictional town of Heartlake City.

General was introduced in 2025 and currently consists of 5 sets.
Read more
Heres a kids building kit packed with storytelling inspiration. The LEGO Friends Costume Party with Unicorn & Fairy (42661) set for girls and boys aged 6 and up comes with 4 LEGO Friends minidolls, a cat figure and a horse figure. It also features lots of cute party accessories for pretend play.

Kids can create their own fun stories and act out social situations as the friends try on their costumes. Autumn is dressing as a bumblebee and Olly is a merman. Churro the cat joins in the fun in a magician costume with Leo as his white bunny. Paisley wears a fairy costume and Periwinkle the horse transforms into a unicorn. The friends enjoy a party with a stage, DJ booth and snacks. Theres also a photo booth with fun accessories where the friends can pose for pictures.

Discover more friendship toys and gifts (sold separately) in the LEGO Friends universe. This set comes with the LEGO Builder app for intuitive building. Here kids can zoom in, rotate models and track progress as...
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