This is one of a series of delightfully humorous tales for beginner readers from the award-winning creator of "Don't Let the Pigeon Drive the Bus"!Gerald is careful. Piggie is not. Piggie cannot help smiling. Gerald can. Gerald worries so that Piggie does not have to. Gerald and Piggie are best friends. In "I am Invited to a Party!", Piggie is invited to her first party. But what will she wear? Gerald, the party expert, knows just how to help...or does he? Told entirely in speech bubbles with a repetitive use of familiar phrases, this highly original book is perfect for children just learning to read