LEGO Cat Birthday Party & Tree House (42666)

The LEGO Cat Birthday Party & Tree House (42666) is part of the Friends theme and includes 321 pieces.

With a price per piece of $0.09, this set offers excellent value based on its price per piece.

Expected to retire in Dec 2026.

LEGO Cat Birthday Party & Tree House set 42666
Set Number42666
ThemeFriends
Pieces321
Minifigs2
Age6+
MSRP$29.99
ReleasedJun 2025
RetirementDec 2026
Price Per Piece$0.09Excellent Value

LEGO Set Inventory

View the full parts list for this LEGO set, including quantities, colors, part numbers, and part images.

Alternate Builds for LEGO Cat Birthday Party & Tree House

These fan-created alternate builds use parts from this LEGO set.