The meanest doll in the world

"Annabelle and Tiffany, dolls who are best friends living in the Palmer house, have an adventure when they hide in Kate Palmer's backpack. They are carried to school, mistakenly go to another house, and encounter Mean Mimi, the wickedest doll of all."
"Annabelle and Tiffany, dolls who are best friends living in the Palmer house, have an adventure when they hide in Kate Palmer's backpack, are carried to school, mistakenly go to another house, and try to stop Princess Mimi, a doll who threatens all dollkind. -http://www.hyperionchildrensbooks.com."
"Annabelle and Tiffany, dolls who are best friends living in the Palmer house, have an adventure when they hide in Kate Palmer's backpack, are carried to school, mistakenly go to another house, and try to stop Princess Mimi, a doll who threatens all dollkind."@en
"Annabelle Doll and Tiffany Funcraft are two dolls who have been best friends since they met in Kate Palmer's house at 26 Wetherby Lane. In this sequel to The Doll People, they hitch a ride in Kate's backpack and find themselves in the biggest adventure of their lives, a day at school! But when an attempt to return home lands them in the wrong house, they're in far deeper trouble than they imagined..."