TODAY with Hoda and Jenna: Author Emma Straub and her mom talk collaborating on new book

Bestselling author Emma Straub, and her mother Susan Straub, stop by TODAY to talk about their collaboration on a new picture book called "Gaga Mistake Day" about letting grandparents be grandparents. "We had so much fun making this book together. We put so many things that Gaga really does...like too many bubbles in the bathtub and cake for really any reason," Emma says.