Author:
Rylant, Cynthia.
Edition Statement:1st ed.
Imprint:New York : Simon & Schuster Books for Young Readers, c2007.
Description40 p. : col. ill. ; 24 cm.
Note:Annie and her pet rabbit, Snowball, invite Henry and Mudge to a dress-up birthday party, but there is some confusion about what the guests are supposed to wear.