Discover a paw-some building experience with the LEGO Friends 42666 Cat Birthday Party & Tree House Set! Get the most out of this set with the LEGO Builder app. The app lets you zoom in and rotate a 3D version of your LEGO Friends set as you build, track your progress and save all your sets in one place.This fun toy sets the scene for Churro's birthday party. Four of Churro's feline friends are here too, plus LEGO Friends characters Leo and Paisley. Explore the fun details, including birthday presents, banners and cat-shaped balloons. Kids will love guiding the pets around the cat tree house, where there's a fish-shaped piñata, a cat toy, cat grass, a water fountain and litter tray. Then it's time for the cats to sit at the rotating table to enjoy Churros birthday cake. With so many ways to play with this animal playset, kids can tell a different friendship story every time.