Families who loved My Big Boy Undies by Karen Katz often look for books with a similar feel. These 20 recommendations were selected for their similarity in style, theme, and reading level.
A parent would reach for this book when their toddler is showing the first signs of potty readiness or is transitioning from diapers to underwear. This book is designed to build excitement around the concept of big kid status, focusing on the pride that comes with wearing colorful, comfortable undies just like a grown-up. Through Karen Katz's signature bright, patterned illustrations, the story follows a young boy as he celebrates his new independence. It normalizes the shift away from diapers by framing it as a joyful milestone rather than a chore or a scary change. Parents will find it particularly helpful for reinforcing the positive feelings associated with self-care and growing up, making it a perfect low-pressure introduction to the potty training journey for children aged one to three.