Equipped with encouraging stickers (''Oops!''), Mo Willems' new storybook (Hyperion, $12.99) aims to make potty training easy and fun. Surely this book will whiz straight to the top and go No. 1.
Equipped with encouraging stickers (''Oops!''), Mo Willems' new storybook (Hyperion, $12.99) aims to make potty training easy and fun. Surely this book will whiz straight to the top and go No. 1.