The adventures of Ivy and Bean continue in the latest installment from series creators Annie Barrows and Sophie Blackall. In , the two girls hatch a plan to prove that Bean's big sister is the world's worst babysitter. Of course plans go awry, but fun ensues! Author - Annie Barrows Illustrator - Sophie Blackall Number of Pages - 128 Format - Softcover Publisher - Chronicle Books Published - 2008-08-01