It's hard being practically perfect and having the world's messiest younger sister. Big sister is constantly urging Sophie to be neat -- "like me, Olivia" -- but whether at home, at school, trick-or-treating on Halloween, or even at the beach, Sophie is a disaster. Still, as big brother, Jake, and their parents keep reminding Olivia, Sophie does have some redeeming qualities.

Sophie joins the legendary Alexander as super-completely and totally one of Judith Viorst's most irresistible characters ever.