Celebrate with LEGO!
Birthday Cupcake Fun

Build and decorate your own customizable cupcake with 174 pieces, perfect for LEGO fans and birthday celebrations!

🏛 Seasonal
Set #40905

Birthday Cupcake

Discover the Birthday Cupcake from the Seasonal collection - 174 pieces of building excellence.

⏱ 1-2 hr 🧩 174 pcs 🎂 Ages 7+

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📖 About This Set

Celebrate kids’ birthdays with the LEGO® Birthday Cupcake (40905) toy. This customizable birthday gift comes with a range of colorful tiles and shapes letting kids decorate their cake in lots of creative ways. This customizable small toy includes a chef minifigure holding a balloon animal that young builders can use to decorate the cupcake, as well as candles for their age. This is the ideal birthday gift for 7-year-old-plus girls and boys, or for kids who love baking. Set contains 174 pieces.

  • BIRTHDAY CUPCAKE TOY – The LEGO® Birthday Cupcake (40905) building set comes with a small toy cupcake with frosting tiles, a chef minifigure and lots of details for decoration
  • INCLUDES A MINIFIGURE AND ACCESSORIES – This fun building kit includes a chef minifigure, holding a cute balloon animal, and a ladder the chef can climb to decorate the top of the cupcake toy
  • CREATIVE DECORATIONS – The birthday toy comes with a range of colorful accessories that kids can use to customize their cupcake, including candles, tiles and even a cherry
  • DIGITAL BUILDING INSTRUCTIONS – The LEGO® Builder app guides kids on a building adventure that lets them zoom in and rotate sets using 3D instructions, as well as save and track their progress
  • BIRTHDAY GIFT IDEA FOR KIDS – The ideal birthday gift for girls, boys and kids ages 7-year-old-plus because the set comes with a total of 8 birthday candles
  • DIMENSIONS – This building set includes a cupcake toy that measures over 3 in. (10 cm) high, 4 in. (11 cm) wide and 3 in. (8 cm) deep

📦 Full Parts Inventory - 42 unique parts • 174 total pieces

Tile, Star with Stud Holder, Pin Hole Tile, Star with S...
Part #: 11609 Pearl Gold
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Plate Special 1 x...
Part #: 15573 Bright Pink
Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Plate Special Rou...
Part #: 18674 Medium Azure
Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side Brick Special 1 x...
Part #: 22885 White
Plant, Flower, Plate Round 1 x 1 with 5 Petals Plant, Flower, Pl...
Part #: 24866 Green
Tile Round 1 x 1 Quarter Tile Round 1 x 1 ...
Part #: 25269 Orange
Tile Round 1 x 1 Quarter Tile Round 1 x 1 ...
Part #: 25269 Medium Lavender
Tile Round 1 x 1 Quarter Tile Round 1 x 1 ...
Part #: 25269 Medium Nougat
Tile Round 1 x 1 Quarter Tile Round 1 x 1 ...
Part #: 25269 Medium Azure
Tile Round 1 x 1 Quarter Tile Round 1 x 1 ...
Part #: 25269 Yellow
Tile Round 1 x 1 Quarter Tile Round 1 x 1 ...
Part #: 25269 Lime
Plate Special 1 x 2 Side Handle [Free Ends] Plate Special 1 x...
Part #: 2540 White
Brick 2 x 4 Brick 2 x 4
Part #: 3001 Bright Pink
Brick 1 x 2 Brick 1 x 2
Part #: 3004 Reddish Brown
Plate 2 x 4 Plate 2 x 4
Part #: 3020 White
Plate 2 x 4 Plate 2 x 4
Part #: 3020 Reddish Brown
Plate 2 x 2 Plate 2 x 2
Part #: 3022 Bright Pink
Plate 4 x 6 Plate 4 x 6
Part #: 3032 Reddish Brown
Slope 18° 4 x 2 Slope 18° 4 x 2
Part #: 30363 Reddish Brown
Slope 45° 2 x 1 with Bottom Pin Slope 45° 2 x 1 w...
Part #: 3040b Reddish Brown
Brick Special 1 x 4 with 4 Studs on One Side Brick Special 1 x...
Part #: 30414 Lime
Plate Round Corner 4 x 4 Plate Round Corne...
Part #: 30565 Bright Pink
Brick Round 1 x 1 Open Stud Brick Round 1 x 1...
Part #: 3062b Medium Azure
Brick Round 2 x 2 Dome Top, Vented Stud Brick Round 2 x 2...
Part #: 3262 Red
Food Hot Dog / Sausage Food Hot Dog / Sa...
Part #: 33078 Bright Green
Plate Special 1 x 2 Rounded with 2 Open Studs Plate Special 1 x...
Part #: 35480 White
Plate Special 1 x 2 Rounded with 2 Open Studs Plate Special 1 x...
Part #: 35480 Light Bluish Gray
Brick Curved 1 x 2 x 2/3 Double Curved Top, No Studs Brick Curved 1 x ...
Part #: 3563 Reddish Brown
Balloon Dog Balloon Dog
Part #: 35692 Trans-Dark Blue
Minifig Head Sally, Girl, Eyelashes, Freckles, Smile Minifig Head Sall...
Part #: 3626cpr1635 Yellow
Plate 1 x 6 Plate 1 x 6
Part #: 3666 Medium Azure
Plate 1 x 6 Plate 1 x 6
Part #: 3666 Reddish Brown
Plate 1 x 4 Plate 1 x 4
Part #: 3710 Medium Nougat
Plate 1 x 4 Plate 1 x 4
Part #: 3710 Red
Wave / Flame Small with Pin Wave / Flame Smal...
Part #: 37775 Trans-Orange
Hat, Chef / Baker Hat, Chef / Baker
Part #: 3898 White
Tile 1 x 1 Heart Tile 1 x 1 Heart
Part #: 39739 Red
Legs Short Legs Short
Part #: 41879a White
Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised - Updated Version Plate Special 2 x...
Part #: 4304 Yellow
Wedge Sloped 4 x 2 Triple Left Wedge Sloped 4 x ...
Part #: 43710 Reddish Brown
Wedge Sloped 4 x 2 Triple Right Wedge Sloped 4 x ...
Part #: 43711 Reddish Brown
Dish 3 x 3 Inverted [Radar] Dish 3 x 3 Invert...
Part #: 43898 White
Bar 7 x 3 with Double Clips (Ladder) [Round Clips] Bar 7 x 3 with Do...
Part #: 5630 Yellow
Brick Curved 2 x 2 x 1 Curved Top, Corner Brick Curved 2 x ...
Part #: 5846 12× Bright Pink
Plate Round 1 x 1 with Solid Stud Plate Round 1 x 1...
Part #: 6141 Yellow
Plate Round 1 x 1 with Solid Stud Plate Round 1 x 1...
Part #: 6141 Dark Pink
Plate Special 4 x 4 with 2 x 2 Opening Plate Special 4 x...
Part #: 64799 Light Bluish Gray
Brick Special 1 x 2 x 1 2/3 with 8 Studs on 3 Sides Brick Special 1 x...
Part #: 67329 Light Bluish Gray
Plate Round Corner 2 x 2 with 1 x 1 Cutout Plate Round Corne...
Part #: 79491 White
Plate Special 2 x 2 with Groove and Center Stud (Jumper) Plate Special 2 x...
Part #: 87580 White
Brick and Axle Separator v2.0 Brick and Axle Se...
Part #: 96874 Orange
Torso Chef with 8 Buttons and Long Red Neckerchief / Neckerchief on Back Print, White Arms, Yellow Hands Torso Chef with 8...
Part #: 973c27h01pr9999 White

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📖 Building Instructions 2

Birthday Cupcake Instructions
BI 3105, 40, 40905 V29
Download PDF
Birthday Cupcake Instructions
BI 3105, 40, 40905 V39
Download PDF

Charts Inventory Statistics

42
Unique Parts
174
Total Pieces
0
Minifigures
Inventory Version: 1