Is the LEGO Cat Birthday Party & Tree House (42666-1) still popular?

Yes, as a 2025 Friends set, it is part of a currently popular theme and design.

How many pieces does set 42666-1 contain?

This Friends set includes 321 pieces.

This set belongs to the Friends theme.

Name: LEGO Cat Birthday Party & Tree House (42666-1)
Brand: LEGO

Friends

Friends · 2025

Theme · FriendsPieces · 321Set Number · 42666-1Year · 2025

Used

—

New / Sealed

—

Live on eBay now

Converted from USD at the ECB reference rate — sold comps are US-market sales.

JunkPal AI· resale insightanalyzing sold comps…

▍

Is the LEGO Cat Birthday Party & Tree House (42666-1) still popular?: Yes, as a 2025 Friends set, it is part of a currently popular theme and design.
How many pieces does set 42666-1 contain?: This Friends set includes 321 pieces.
What theme is the LEGO Cat Birthday Party & Tree House (42666-1) from?: This set belongs to the Friends theme.