How many pieces does the LEGO Birthday Cupcake (40905-1) have?

The LEGO Birthday Cupcake set (40905-1) contains 174 pieces. It was released in 2026 as part of the LEGO Seasonal theme.

How can I find missing parts for LEGO set 40905-1?

On BrickMissing you can check which parts from the LEGO Birthday Cupcake (40905-1) you already own. Add your LEGO collection and we'll show exactly which of the 174 pieces you're missing and which you already have.

Can I build the LEGO Birthday Cupcake 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 174 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Birthday Cupcake from?

The LEGO Birthday Cupcake (40905-1) belongs to the LEGO Seasonal theme. You can browse all Seasonal sets on BrickMissing to find more sets from this theme.

Birthday Cupcake

🏷️ 40905-1•🎨 Seasonal•📅 2026•🧱 174 parts•Easy

Celebrate with the LEGO® Birthday Cupcake (40905). This customizable creation features a range of vibrant tiles and unique shapes, allowing for imaginative decoration. Included is a cheerful chef minifigure, complete with a charming balloon animal, perfect for adorning the cupcake. Candles are also included to personalize the display. This set offers a delightful building experience for those who appreciate baking themes and creative construction. Express your creativity with every brick. Contains 174 pieces.

Parts Inventory

🧱 174 parts

Part	Color	Qty
Tile, Star with Stud Holder, Pin Hole 11609	Pearl Gold	4×
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573	Bright Pink	4×
Plate Special Round 2 x 2 with Center Stud (Jumper Plate) 18674	Medium Azure	1×
Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side 22885	White	2×
Plant, Flower, Plate Round 1 x 1 with 5 Petals 24866	Light Bluish Gray	1×
Tile Round 1 x 1 Quarter 25269	Medium Azure	4×
Tile Round 1 x 1 Quarter 25269	Yellow	4×
Tile Round 1 x 1 Quarter 25269	Orange	4×
Tile Round 1 x 1 Quarter 25269	Medium Lavender	4×
Tile Round 1 x 1 Quarter 25269	Medium Nougat	4×

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

Build DNA

Parts inventory insights for Birthday Cupcake

174 pieces puts this build -14% against the average Seasonal set and -72% against the average 2026 release.

LEGOSEASONAL

Vs average Seasonal set

-14%-28 parts

This set174

Average set202

Average Seasonal set: 202 pieces across 304 other sets.

Vs average 2026 set

-72%-456 parts

This set174

Average set630

Average 2026 set: 630 pieces across 421 other sets.

Color profile

17different colors

Dominant color

Reddish Brown

Reddish Brown37x

21%

Bright Pink24x

14%

White19x

11%

Medium Azure15x

Unique parts

4.1 pieces per unique type

Repeat factor

Average pieces per unique type.

Most used part

Tile Round 1 x 1 Quarter

24x

Results are based on official LEGO part inventories. Accuracy improves as you confirm set completeness.

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Build Insights🧩42unique parts🎨17different colors📊10.2avg. parts per color🏆24×Tile Round 1 x 1 Quarter

🎨 All Seasonal sets 📅 All sets from 2026

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