Put on the purr-fect pet party with the LEGO Friends Cat Birthday Party & Tree House (42666), a delightful building toy for young animal lovers ages 6 and up. This adorable tree house set stars birthday cat Churro and four furry friends celebrating alongside Leo and Paisley with festive decorations, presents, and cat-shaped balloons. Young builders develop creativity as they guide the playful cats through their multi-level tree house, complete with fish-shaped piñata, interactive toys, cat grass, water fountain, and essential litter box. When it's time for the main event, kids help the feline friends gather around the rotating table to enjoy Churro's special birthday cake. Perfect for imaginative storytelling, this set encourages nurturing play as children create different adventures for their animal companions. Makes a wonderful birthday gift for girls and boys who love animals and creative building toys. The LEGO Builder app offers intuitive building guidance with 3D instructions and helpful tools. Contains 321 pieces.