A fierce and funny celebration of the ups and downs of having a sibling Monstrous sisterly fun. --Kirkus ReviewsLucy thinks her little sister, Mia, is a monster. She follows Lucy everywhere, wreaks havoc in her room, and steals her spotlight. When at last Lucy has had enough, she yells, You little monster, GO AWAY But Lucy never imagines that Mia might disappear into a land of REAL monsters What's a big sister to do?This riotous,...