Aliya's Baby Sister's Playroom

Aliya's Baby Sister's Playroom (42645-1) is a set in the Friends theme, released in 2025. It has 115 pieces and 3 minifigures.

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Number:42645-1
Released:January 2025
Pieces:115
Box size:19.1 × 14.1 × 4.6 cm
Theme:Friends

Box size and weight as measured by Brickset.

In numbers

LEGO planned to retire this set in December 2025.

Product details

Number: 42645-1
Name: Aliya's Baby Sister's Playroom
Theme: Friends
Released: January 2025
Launched: January 2025
Retired: November 2025 in the United States
Pieces: 115
Minifigures: 3
RRP: ≈ 16.15 USD (22.99 CAD) (Canada)≈ 20.19 USD (17.99 EUR) (Germany)≈ 19.79 USD (14.99 GBP) (United Kingdom)17.99 USD (United States)
Price per piece: ≈ 0.140 USD (0.200 CAD) (Canada)≈ 0.176 USD (0.156 EUR) (Germany)≈ 0.172 USD (0.130 GBP) (United Kingdom)0.156 USD (United States)

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

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Description from LEGO.com

Kids build social skills through creative play

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This pretend-play toy set for kids aged 6 years old and up lets girls and boys create endless babysitting friendship stories. The LEGO® Friends Aliya’s Baby Sister’s Playroom (42645) creative toy set comes with 2 LEGO Friends mini-dolls, a baby figure and lots of accessories for role play. Inspire kids to build the playroom, where Aliya and Liann are caring for Aliya’s baby sister, Amalia. There’s everything kids need to create friendship stories. They can feed the baby at the table – a clever flip function shows just how much mess a baby can make at mealtimes! When it’s time for a nap, there’s a crib for Amalia. Playtime is catered for too, with a slide, playmat, ball pit, a rocking duck ride and a cute plushie-style LEGO piece. Then the friends take Amalia for a walk in the baby stroller toy. Discover other building playsets (sold separately) in the LEGO Friends universe, with lots more friendship stories to uncover. This set comes with the LEGO Builder app for intuitive building.

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Pricing

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≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

Price statistics by condition

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Sources LEGO® Shop (BR): 5

Latest price from each shop

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LEGO® Shop (BR) Sealed · unknown tax basis · seen 10/6/2026 · excluded: quarantined

≈ 36.23 USD (179.99 BRL)

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The cheapest eBay listings we saw in the last seven days. They are sellers' asking prices, so they are not in the shop price list or the best offer.

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Recommended retail price

What LEGO published as the recommended retail price, market by market, in that market's own currency. No market's price is ever derived from another's.

Canada ≈ 16.15 USD (22.99 CAD) unknown tax basis Available 12/11/2024 to 11/22/2025.Recorded by BrickDb since 10/2/2026

Germany ≈ 20.19 USD (17.99 EUR) gross Available 12/11/2024 to 6/27/2026.Recorded by BrickDb since 10/2/2026

United Kingdom ≈ 19.79 USD (14.99 GBP) gross Available 12/11/2024 to 1/5/2026.Recorded by BrickDb since 10/2/2026

United States 17.99 USD net Available 12/11/2024 to 11/23/2025.Recorded by BrickDb since 10/2/2026

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

Building instructions

All building instructions for this set on LEGO.com

Parts in this set

89 inventory lines

Catalogue image of the part Sticker Sheet for Set 42645-1

Sticker Sheet for Set 42645-1 10110444· [No Color/Any Color]

×1

Catalogue image of the part Tile Round 1 x 2

Tile Round 1 x 2 1126· Bright Pink

×1

Catalogue image of the part Hat / Cap Short Curved Bill with Seams and Hole on Top

Hat / Cap Short Curved Bill with Seams and Hole on Top 11303· Red

×1

Catalogue image of the part Plate Special 1 x 2 with Pin Hole on Top

Plate Special 1 x 2 with Pin Hole on Top 11458· Yellow

×1

Catalogue image of the part Brick Curved Inverted 4 x 1

Brick Curved Inverted 4 x 1 13547· Yellow

×1

Catalogue image of the part Brick 1 x 1 x 3

Brick 1 x 1 x 3 14716· Dark Azure

×1

Catalogue image of the part Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)

Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573· Red

×1

Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573· Bright Green

×1

Tile 4 x 4 1751· White

×1

Catalogue image of the part Plate Special Round 2 x 2 with Center Stud (Jumper Plate)

Plate Special Round 2 x 2 with Center Stud (Jumper Plate) 18674· Bright Green

×1

Catalogue image of the part Equipment Baby Bottle with Handle

Equipment Baby Bottle with Handle 18855· Light Aqua

×1

Catalogue image of the part Tile Special 1 x 2 Grille with Bottom Groove

Tile Special 1 x 2 Grille with Bottom Groove 2412b· White

×4

Catalogue image of the part Brick Curved 3 x 2 No Studs

Brick Curved 3 x 2 No Studs 24309· Bright Green

×1

Catalogue image of the part Tile 1 x 4 with Groove

Tile 1 x 4 with Groove 2431· Bright Pink

×1

Catalogue image of the part Wheel Skateboard / Trolley

Wheel Skateboard / Trolley 2496· Bright Green

×2

Brick 1 x 2 3004· Yellow

×1

3 minifigures

Minifigures in this set

Catalogue image of the minifigure Aliya - Coral Top, Medium Azure Pants

Same theme, piece count within 15 %

Similar sets

Catalogue image of Stephanie's Soccer Practice

Aliya's Baby Sister's Playroom

In numbers

Product details

BrickLink market data

Description from LEGO.com

Can I build this?

Pricing

Price history

Latest price from each shop

On eBay

Recommended retail price

Building instructions

Parts in this set

Minifigures in this set

Aliya - Coral Top, Medium Azure Pants

Amalia

Liann - White Top, Bright Light Orange Skirt

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