Cat Birthday Party & Tree House 42666
Cat Birthday Party & Tree House 42666 thumbnail-0

Lego® Friends 42666 Cat Birthday Party & Tree House

Friends
The Lego set Cat Birthday Party & Tree House with the Lego number 42666 is part of the LEGO Friends theme. The set was released in May of 2025. It contains 4 minifigures. The model consists of a total of 321 parts and we estimate it takes you around < 1 hour to build it.
The set weighs around 0.424 kg in total. The recommended retail price is £24.99.
Our Brickfact Lego price comparison compares prices from 2 shops for this set. Currently Amazon.co.uk has the lowest price at £19.99. This corresponds to a per piece price of £0.06. With this offer, you save £5.00 off the suggested retail price and get the set at a 20% discount.
You will also receive 200 Insiders points if you decide to buy the set from the official Lego store. You can exchange them for discount coupons for future purchases.
The Part-Out-Value (POV) is the sum of all part prices paid on bricklink.com for this set. It is about £40.50. You save around £20.51 if you buy this set directly at Amazon.co.uk instead of purchasing the bricks on bricklink.com. Therefore, the current best offer has a POV rate of 2.03. The POV Rate is the ratio of Part-Out-Value to the current best price on Brickfact.com.
Disclosure: As members of the Amazon Partner Program, eBay Partner Network and other affiliate programs of retailers such as LEGO, we earn from qualified sales that you make via links to the respective platforms and stores on our website.

Lego 42666 price comparison

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Lego 42666 product data

Set Information

Set ID
42666
Theme
Pieces
321
Building Time
< 1 hour
Minifigures
4

Availability

Release
05/2025
Retiring Status
Begin of Life

Price Information

RRP
£24.99
Insiders Points (for purchase at Lego)
200
Part Out Value
£40.50
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Packaging

Weight
0.424 kg
EAN (GTIN13)
5702017783758

Lego 42666 price trend

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Minifigures from 42666 Cat Birthday Party & Tree House

The Cat Birthday Party & Tree House set includes 4 different minifigures, 2 of which are unique to this set. The combined value of the minifigures is £7.66, which is ~31% of the RRP of this set.
x1
Thumbnail of minifigure frnd819
Friends Paisley - Bright Light Yellow and Medium Lavender Tank Top, Medium Lavender Shorts, Dark Tan Shoes
Friends
time-logo
2025
# frnd819
£3.25
i
2 sets
x1
Thumbnail of minifigure frnd846
Friends Leo - Coral and Magenta Checkered Sleeveless Shirt, Yellow Cropped Trousers, Medium Azure Shoes
Friends
time-logo
2025
# frnd846
£1.43
Unique
x1
Thumbnail of minifigure frnd0846
Friends Leo - Coral and Magenta Checkered Sleeveless Shirt, Yellow Cropped Trousers, Medium Azure Shoes
Friends
time-logo
2025
# frnd0846
£1.43
Unique
x1
Thumbnail of minifigure frnd0819
Friends Paisley - Bright Light Yellow and Medium Lavender Tank Top, Medium Lavender Shorts, Dark Tan Shoes
Friends
time-logo
2025
# frnd0819
£1.56
2 sets

Official Set Description for LEGO 42666 Cat Birthday Party & Tree House

Discover a paw-some building kit for girls, boys and cat-lovers aged 6 and up. The LEGO® Friends Cat Birthday Party & Tree House (42666) toy comes with 2 minidolls, 5 cat figures and lots of accessories for imaginative play packed with sweet kitty moments.

This fun toy sets the scene for Churro’s birthday party. 4 of Churro’s feline friends are here too, plus LEGO Friends characters Leo and Paisley. Explore the fun details, including birthday presents, banners and cat-shaped balloons. Kids will love guiding the pets around the cat tree house, where there’s a fish-shaped piñata, a cat toy, cat grass, a water fountain and litter box. Then it’s time for the cats to sit at the rotating table to enjoy Churro’s birthday cake. With so many ways to play with this animal playset, kids can tell a different friendship story every time.

Discover more exciting creative toys (sold separately) in the LEGO Friends universe. This LEGO set comes with the LEGO Builder app for intuitive building.

  • A building kit for cat-loving kids – This LEGO® Friends Cat Birthday Party & Tree House toy for girls and boys aged 6 and up comes with 2 minidolls and 5 cat figures for imaginative play
  • Cat tree-house toy – Kids can have lots of fun playing with the 5 cats on the cat tree house, which features a fish-shaped piñata with treats inside, a cat toy, cat grass and a water fountain
  • Create stories with the LEGO® Friends characters – This pretend-play set comes with Leo and Paisley minidolls, 5 catfigures, a buildable cat tree house and a buildable birthday cake scene
  • Cat-themed accessories – Kids can create endless fun stories using the accessories, which include a birthday cake with candle, gifts, banners, cat-shaped balloons, a birthdayhat and cat treats
  • A gift for kids who love cats – This animal toy set makes a great creative gift for girls, boys and cat-lovers aged 6 and up or for anyone who would love to build a cat-themed birthday scene
  • Online show – Inspire more creative-play ideas with other sets (sold separately) and the LEGO® Friends: The Next Chapter online show, where kids can get to know the characters of Heartlake City
  • Let’s tell a friendship story – The LEGO® Friends range of building sets lets kids explore different friendship moments, with lots of opportunities to create their own imaginative stories
  • Measurements – 321-piece set with a main model measuring over 7 in. (18 cm) high, 6 in. (16 cm) wide and 4 in. (10 cm) deep

Building Instruction for LEGO 42666 Cat Birthday Party & Tree House

Disclaimer
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