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Cat Birthday Party

Cat Birthday Party

42666-1·Friends·2025·2 minifigs·138 parts

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About Cat Birthday Party

Cat Birthday Party (42666-1) is a LEGO Friends set from 2025. There isn't enough recent sales data for a reliable price estimate. It includes 2 minifigures.

Minifigures in Cat Birthday Party (2)

Friends Paisley - Bright Light Yellow and Medium Lavender Tank Top, Medium Lavender Shorts, Dark Tan Shoes
Friends Paisley - Bright Light Yellow and Medium Lavender Tank Top, Medium Lavender Shorts, Dark Tan Shoes
frnd0819$1.38
Friends Leo - Coral and Magenta Checkered Sleeveless Shirt, Yellow Cropped Trousers, Medium Azure Shoes
Friends Leo - Coral and Magenta Checkered Sleeveless Shirt, Yellow Cropped Trousers, Medium Azure Shoes
frnd0846$0.80

Parts (138)

Bar Holder with Clip
Bar Holder with Clip
×2
Plate, Modified 1 x 2 with Clip on Side (Horizontal Grip)
Plate, Modified 1 x 2 with Clip on Side (Horizontal Grip)
Slope, Curved 2 x 1 x 2/3
Slope, Curved 2 x 1 x 2/3
×2
Cat, Friends Style, Sitting with Sand Green Eyes, Dark Brown Facial Markings, Black Nose and Whisker Dots, and White Auricles, Chin, Chest and Paws Pattern (Peri)
Cat, Friends Style, Sitting with Sand Green Eyes, Dark Brown Facial Markings, Black Nose and Whisker Dots, and White Auricles, Chin, Chest and Paws Pattern (Peri)
Friends Accessories Hair Decoration, Bow with Heart, Long Ribbon, and Small Pin
Friends Accessories Hair Decoration, Bow with Heart, Long Ribbon, and Small Pin
×2
Arch 1 x 6 x 2 - Medium Thick Top without Reinforced Underside
Arch 1 x 6 x 2 - Medium Thick Top without Reinforced Underside
Brick, Round 2 x 2 Dome Bottom
Brick, Round 2 x 2 Dome Bottom
×2
Plate, Round 1 x 2 Half with 1 Stud (Jumper)
Plate, Round 1 x 2 Half with 1 Stud (Jumper)
Tile, Round 1 x 2 Half
Tile, Round 1 x 2 Half
×3
Arch 1 x 3 x 2 Inverted
Arch 1 x 3 x 2 Inverted
×2
Tile, Round 2 x 2 with Open Stud
Tile, Round 2 x 2 with Open Stud
×2
Tile, Round 2 x 2 with Open Stud
Tile, Round 2 x 2 with Open Stud
×3
Tile, Round 2 x 2 with Open Stud
Tile, Round 2 x 2 with Open Stud
×4
Friends Accessories Hair Decoration, Flower with Pointed Petals and Small Pin
Friends Accessories Hair Decoration, Flower with Pointed Petals and Small Pin
×3
Brick, Modified 1 x 2 x 1 2/3 with Studs on Side
Brick, Modified 1 x 2 x 1 2/3 with Studs on Side
Arch 1 x 5 x 4 - Continuous Bow
Arch 1 x 5 x 4 - Continuous Bow
×2
Bar Holder with Handle
Bar Holder with Handle
Technic, Axle Connector Hub with 2 Bar Holders Perpendicular
Technic, Axle Connector Hub with 2 Bar Holders Perpendicular
×2
Minifigure, Hat with Small Pin, Party Hat
Minifigure, Hat with Small Pin, Party Hat
×2
Plant Leaves 4 x 3
Plant Leaves 4 x 3
×8
Tile 1 x 4
Tile 1 x 4
×2
Plate, Round 1 x 1 with Flower Edge (5 Petals)
Plate, Round 1 x 1 with Flower Edge (5 Petals)
×5
Plate, Round 1 x 1 with Flower Edge (5 Petals)
Plate, Round 1 x 1 with Flower Edge (5 Petals)
×3
Plate, Round 1 x 1 with Flower Edge (5 Petals)
Plate, Round 1 x 1 with Flower Edge (5 Petals)
×3
Brick, Round Tube 1 x 1 d. 90 degrees Elbow Macaroni - No Stud - Type 2 - Axle Hole
Brick, Round Tube 1 x 1 d. 90 degrees Elbow Macaroni - No Stud - Type 2 - Axle Hole
×6
Cat, Friends Style, Large, Sitting with Orange Markings and Paws, Lime Eyes, Open Mouth with Bright Pink Tongue Pattern (Churro)
Cat, Friends Style, Large, Sitting with Orange Markings and Paws, Lime Eyes, Open Mouth with Bright Pink Tongue Pattern (Churro)
Cat, Friends Style, Large, Sitting with Light Bluish Gray Fur, Auricles and Paws, Yellowish Green Eyes and Black Nose Pattern (Bear)
Cat, Friends Style, Large, Sitting with Light Bluish Gray Fur, Auricles and Paws, Yellowish Green Eyes and Black Nose Pattern (Bear)
Tile 2 x 3
Tile 2 x 3
×2
Turntable 2 x 2 Square Base
Turntable 2 x 2 Square Base
Tile, Round Corner 2 x 2 Macaroni
Tile, Round Corner 2 x 2 Macaroni
×2
Container, Box 2 x 2 x 1 - Top Opening with Raised Inner Bottom
Container, Box 2 x 2 x 1 - Top Opening with Raised Inner Bottom
×3
Container, Box 2 x 2 x 1 - Top Opening with Raised Inner Bottom
Container, Box 2 x 2 x 1 - Top Opening with Raised Inner Bottom
Brick, Modified 1 x 2 with Grille / Fluted Profile
Brick, Modified 1 x 2 with Grille / Fluted Profile
×3
Brick 2 x 3
Brick 2 x 3
Brick 1 x 2
Brick 1 x 2
×3
Brick 1 x 2
Brick 1 x 2
×3
Brick 1 x 2
Brick 1 x 2
×3
Brick 1 x 1
Brick 1 x 1
×3
Brick 1 x 1
Brick 1 x 1
×5
Brick 1 x 1
Brick 1 x 1
×3
Brick 1 x 4
Brick 1 x 4
×2
Plate 2 x 4
Plate 2 x 4
×2
Plate 2 x 4
Plate 2 x 4
Plate 2 x 3
Plate 2 x 3
Plate 2 x 2
Plate 2 x 2
Plate 1 x 2
Plate 1 x 2
×5
Plate 6 x 10
Plate 6 x 10
×2
Bar   4L (Lightsaber Blade / Wand)
Bar 4L (Lightsaber Blade / Wand)
×2
Tile 2 x 2
Tile 2 x 2
×2
Tile 2 x 2
Tile 2 x 2
Tile 1 x 2
Tile 1 x 2
×2
Tile 1 x 2
Tile 1 x 2
×4
Tile 1 x 2 with 'MEOW BiTS' and Medium Nougat and Tan Cat on White and Medium Azure Jagged Background Pattern
Tile 1 x 2 with 'MEOW BiTS' and Medium Nougat and Tan Cat on White and Medium Azure Jagged Background Pattern
×2
Plate, Modified 1 x 2 with Door Rail
Plate, Modified 1 x 2 with Door Rail
×3
Technic, Axle  2L Notched
Technic, Axle 2L Notched
×6
Plant Plate, Round 1 x 1 with 3 Layered Leaves
Plant Plate, Round 1 x 1 with 3 Layered Leaves
×4
Plant Plate, Round 1 x 1 with 3 Layered Leaves
Plant Plate, Round 1 x 1 with 3 Layered Leaves
×25
Slope, Curved 2 x 2 x 2/3 Inverted
Slope, Curved 2 x 2 x 2/3 Inverted
×2
Bar   1L with 1 x 1 Round Plate with Hollow Stud
Bar 1L with 1 x 1 Round Plate with Hollow Stud
×2
Slope 33 3 x 2
Slope 33 3 x 2
Minifigure, Crown Tiara with Small Pin, 5 Points, Rounded Ends
Minifigure, Crown Tiara with Small Pin, 5 Points, Rounded Ends
×2
Plate, Modified 4 x 4 with 3 x 3 Curved Cutout
Plate, Modified 4 x 4 with 3 x 3 Curved Cutout
Plate, Modified 4 x 4 with 3 x 3 Curved Cutout
Plate, Modified 4 x 4 with 3 x 3 Curved Cutout
Plate, Round 1 x 2 with Open Studs
Plate, Round 1 x 2 with Open Studs
Plate, Round 1 x 2 with Open Studs
Plate, Round 1 x 2 with Open Studs
×2
Brick 1 x 3
Brick 1 x 3
×2
Arch 1 x 4
Arch 1 x 4
Technic, Brick 1 x 2 with Hole
Technic, Brick 1 x 2 with Hole
Plate 1 x 4
Plate 1 x 4
×2
Slope, Curved 1 x 2 with Bottom Stud Holder
Slope, Curved 1 x 2 with Bottom Stud Holder
×2
Plant Stem with Bar, 3 Leaves, and Small Pin Hole
Plant Stem with Bar, 3 Leaves, and Small Pin Hole
×7
Minifigure, Utensil Candle
Minifigure, Utensil Candle
Minifigure, Utensil Candle
Minifigure, Utensil Candle
×6
Wave Rounded Straight Single with Small Pin End (Candle Flame)
Wave Rounded Straight Single with Small Pin End (Candle Flame)
×2
Minifigure, Utensil Shovel / Spade - Handle with Round End
Minifigure, Utensil Shovel / Spade - Handle with Round End
Antenna 4H - Flat Top
Antenna 4H - Flat Top
×2
Plate, Round 2 x 2 with Axle Hole
Plate, Round 2 x 2 with Axle Hole
×3
Plate, Round 2 x 2 with Axle Hole
Plate, Round 2 x 2 with Axle Hole
Plate, Round 2 x 2 with Axle Hole
Plate, Round 2 x 2 with Axle Hole
×2
Brick, Modified 1 x 1 with Headlight
Brick, Modified 1 x 1 with Headlight
×2
Plate, Round 1 x 1
Plate, Round 1 x 1
×2
Plate, Round 1 x 1
Plate, Round 1 x 1
×5
Plate, Round 8 x 8 Rounded End
Plate, Round 8 x 8 Rounded End
Sticker Sheet for Set 42666 - (10113040/6542237)
Sticker Sheet for Set 42666 - (10113040/6542237)
Technic, Pin 1/2 without Friction Ridges
Technic, Pin 1/2 without Friction Ridges
×2
Plate 1 x 10
Plate 1 x 10
×3
Container, Cupboard 2 x 3 x 2 - Hollow Studs
Container, Cupboard 2 x 3 x 2 - Hollow Studs
Cone 1 x 1 with Top Groove
Cone 1 x 1 with Top Groove
×6
Cone 1 x 1 with Top Groove
Cone 1 x 1 with Top Groove
Plate, Modified 1 x 2 with Bar Arm Up (Horizontal Arm 5mm)
Plate, Modified 1 x 2 with Bar Arm Up (Horizontal Arm 5mm)
×4
Plate, Modified 1 x 2 with Bar Arm Up (Horizontal Arm 5mm)
Plate, Modified 1 x 2 with Bar Arm Up (Horizontal Arm 5mm)
×2
Dish 2 x 2 Inverted (Radar)
Dish 2 x 2 Inverted (Radar)
×2
Dish 2 x 2 Inverted (Radar)
Dish 2 x 2 Inverted (Radar)
Brick, Modified 1 x 1 with Studs on 2 Sides, Opposite
Brick, Modified 1 x 1 with Studs on 2 Sides, Opposite
Bar   1L with Clip Mechanical Claw - Cut Edges and Hole on Side
Bar 1L with Clip Mechanical Claw - Cut Edges and Hole on Side
×2
Plant Plate, Round 1 x 2 with Layered Leaves
Plant Plate, Round 1 x 2 with Layered Leaves
×3
Plant Plate, Round 1 x 2 with Layered Leaves
Plant Plate, Round 1 x 2 with Layered Leaves
×2
Wedge, Plate 2 x 4
Wedge, Plate 2 x 4
Plate, Round 1 x 1 with Horizontal Swirl / Twist
Plate, Round 1 x 1 with Horizontal Swirl / Twist
×2
Barb / Claw / Horn / Tooth - Small
Barb / Claw / Horn / Tooth - Small
×5
Slope 30 1 x 1 x 2/3
Slope 30 1 x 1 x 2/3
×3
Brick, Round 2 x 2 x 1 1/3 Dome Top with Cat Ears
Brick, Round 2 x 2 x 1 1/3 Dome Top with Cat Ears
×2
Technic, Axle Connector Hub with 3 Axles
Technic, Axle Connector Hub with 3 Axles
×3
Plant Flower Round with 2 Layers (Peony Rose) with Open Stud and Small Pin Hole
Plant Flower Round with 2 Layers (Peony Rose) with Open Stud and Small Pin Hole
×2
Plate, Round Corner 6 x 6
Plate, Round Corner 6 x 6
×2
Plate, Round Corner 6 x 6
Plate, Round Corner 6 x 6
Window 1 x 4 x 3 - No Shutter Tabs
Window 1 x 4 x 3 - No Shutter Tabs
Arch 1 x 4 x 2
Arch 1 x 4 x 2
Cylinder Half 2 x 4 x 4
Cylinder Half 2 x 4 x 4
×3
Fish
Fish
Technic, Axle Connector 2L (Smooth with x Hole + Orientation)
Technic, Axle Connector 2L (Smooth with x Hole + Orientation)
×6
Plate, Modified 2 x 4 with 2 Studs (Double Jumper)
Plate, Modified 2 x 4 with 2 Studs (Double Jumper)
×4
Minifigure, Utensil Ball of Wool / Yarn
Minifigure, Utensil Ball of Wool / Yarn
Minifigure, Utensil Ball of Wool / Yarn
Minifigure, Utensil Ball of Wool / Yarn
Minifigure, Cap with Small Pin, Short Curved Bill with Seams and Button on Top
Minifigure, Cap with Small Pin, Short Curved Bill with Seams and Button on Top
×2
Cat, Friends Style, Baby Kitten, Sitting with Yellow Eyes and Coral Tongue Pattern (Pluto)
Cat, Friends Style, Baby Kitten, Sitting with Yellow Eyes and Coral Tongue Pattern (Pluto)
Cat, Friends Style, Baby Kitten, Sitting with Black Eyes, Nose and Mouth, Bright Pink Tongue, White Muzzle and Dark Orange Paws Pattern (Nugget)
Cat, Friends Style, Baby Kitten, Sitting with Black Eyes, Nose and Mouth, Bright Pink Tongue, White Muzzle and Dark Orange Paws Pattern (Nugget)
Brick, Modified 2 x 2 x 2/3 Ribbed with Axle Hole
Brick, Modified 2 x 2 x 2/3 Ribbed with Axle Hole
Hose, Rigid 3mm D.  9L / 7.2cm
Hose, Rigid 3mm D. 9L / 7.2cm
Plate, Modified 1 x 2 with Clip on End (Vertical Grip)
Plate, Modified 1 x 2 with Clip on End (Vertical Grip)
Bar   2L with Stop Ring
Bar 2L with Stop Ring
×2
Bar   2L with Stop Ring
Bar 2L with Stop Ring
×5
Bar   2L with Stop Ring
Bar 2L with Stop Ring
×3
Arch 1 x 2 Inverted
Arch 1 x 2 Inverted
×2
Arch 1 x 2 Inverted
Arch 1 x 2 Inverted
×2
Flag 2 x 2 Square with Flared Edge
Flag 2 x 2 Square with Flared Edge
×3
Brick, Modified 1 x 2 with Stud on Side with Bottom Stud Holder
Brick, Modified 1 x 2 with Stud on Side with Bottom Stud Holder
Brick, Modified 1 x 1 x 2/3 with Open Stud
Brick, Modified 1 x 1 x 2/3 with Open Stud
Brick, Round 4 x 4 with Hole
Brick, Round 4 x 4 with Hole
Panel 1 x 2 x 3 with Side Supports - Hollow Studs
Panel 1 x 2 x 3 with Side Supports - Hollow Studs
×2
Plate, Modified 2 x 2 with Groove and 1 Stud in Center (Jumper)
Plate, Modified 2 x 2 with Groove and 1 Stud in Center (Jumper)
Plate, Modified 2 x 2 with Groove and 1 Stud in Center (Jumper)
Plate, Modified 2 x 2 with Groove and 1 Stud in Center (Jumper)
Plate, Modified 2 x 2 with Groove and 1 Stud in Center (Jumper)
Plate, Modified 2 x 2 with Groove and 1 Stud in Center (Jumper)
×5
Bar   5L with Handle (Friction Ram)
Bar 5L with Handle (Friction Ram)
Tile, Round 1 x 1
Tile, Round 1 x 1
×2
Tile, Round 1 x 1 with Black Eye with Pupil Pattern
Tile, Round 1 x 1 with Black Eye with Pupil Pattern
×3
Tile, Round 1 x 1 with White Animal Paw Print on Reddish Brown Background Pattern
Tile, Round 1 x 1 with White Animal Paw Print on Reddish Brown Background Pattern
×7
String with End Studs (10L Overall) with (Same Color) Studs Pattern
String with End Studs (10L Overall) with (Same Color) Studs Pattern
×2

Common questions about Cat Birthday Party

How much is LEGO Cat Birthday Party (42666-1) worth?

Cat Birthday Party sells for an average of $29.88 new/sealed on BrickLink based on 6 months of completed sales. Current retail availability may affect secondary market prices. Actual prices vary with completeness — missing minifigures or key parts will lower the value.

What minifigures come in LEGO set 42666-1?

This set includes 2 minifigures: Friends Paisley - Bright Light Yellow and Medium Lavender Tank Top, Medium Lavender Shorts, Dark Tan Shoes ($1.38), Friends Leo - Coral and Magenta Checkered Sleeveless Shirt, Yellow Cropped Trousers, Medium Azure Shoes ($0.80). The minifigures have a combined BrickLink value of $2.17. Each figure is linked above with individual pricing if you're looking to buy or sell specific characters.

Is LEGO Cat Birthday Party (42666-1) retired?

Cat Birthday Party was released in 2025. It should still be widely available at retail from LEGO and authorized retailers.

How do I check if my Cat Birthday Party set is complete?

Use the parts list on this page to check every piece and all 2 minifigures. For the minifigures specifically, you can use the brick'em scanner to identify each figure from a photo and confirm it matches what should be in this set. Missing pieces can be individually sourced on BrickLink.

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