Transcript for Author Jennifer Weiner dishes on new book, 'That Summer'
Right now, our next guest has written incredible 15 "New York Times" best-sellers, including favorites like "In her shoes," "Mrs. Everything," and "Big summer." Now Jennifer Weiner's new book "That summer" is being called the it read of the summer. We have Jennifer here on "Good morning America," and allow me to send our condolences and our love. We know your beloved mother passed away recently, and you have been sharing the important lesson that she taught you as a way of honoring her. Can you share with us what that lesson is? Yeah. So my mom was never skinny her entire life, and she was always active. She was a hiker and a biker and a skier and a swimmer, and she taught me how to move through life in a larger body and just use your body as a tool as opposed to something that you've constantly got to beat yourself up about and try to change, and for so many women, there's so many toxic messages we get about weight, and their home is just one more place where they get to see, you know, maybe a mom who's always dieting or mom who says, oh, I was so naughty last night. I'm going to have to be on the treadmill or hours working off that piece of chocolate cake, and I never got that. I got a mom who was just active and out in the world, and I feel so lucky because I know so many women don't get that, and when people ask me, why do you have plus sized characters in your books and why is it so important and to have the endings? That's the reason why. I'm trying to be the Fran I want to see in the world. Now it sounds like certainly your mom plays such a role in these. It's something you refer to out there called the Jennifer Weiner classic heroin, right? They know your characters that you write about. Yeah. Why is it important? It seems like you stay in your lane in a lot of ways. Well, I think it's -- so Tony Morrison who I was extremely lucky to take a class with back in college, and she said, if there's a book you need to read and it's not on the shelf, you've got to write it, and when I was a young woman, a teenager, I needed stories where there were girls like me, you know, they were struggling with weight or body image or self-esteem or dysfunctional families or - horrible families and I needed stories where those girls triumphed in the end, with they found their happy endings and they stayed true to themselves, and those are the books that I've written, and luckily people seem to dig them. They sure do. "New York Times" -- the undisputed boss of the summer read, of the beach read. What was driving "That summer"? What are the issues driving this book? You know, so I wrote this book, start to finish during the pandemic and I obviously was thinking about escape and, you know, being stuck in my house with my husband and my kids who are going to school virtually, I wanted to write about someplace delicious and cape cod is one of my favorite places in the world. I wanted to take readers there, even if it was just on the page, but I was also -- I have an 18-year-old daughter. I'm getting ready to send her out into the world which of course, got me thinking. What's the world like for young women? Is it still the way it was when I was 18 and just starting out? How has it changed? Has it improved? What still needs fixing? All of those issues and they all sort of stirred themselves into a story that became "That summer." What more are you hoping people will take away from the characters in your book? Yeah, you know, I want people to think about the journey that these women are on. It's a story about two women, Daisy and Diana. They have this sort of meet cute thing where Daisy starts getting Diana emails and they become friends, and they're both sort of looking at each other as, like, she's got the life that I want. Diana is single and glamorous and travels the world, and Daisy has a family, and a house in the suburbs, and they're each sort of looking at each other, like, you know, the way many women look at friends, like, that's a road I could have taken. That's a choice I could have made. I want women to think about the journey we're all on, and again, the world we're sending our daughters into. What is that world like, and what can we -- what still needs to happen to make it better? Amen to that. Wll, thank you. Thank you so much. Always a pleasure. You're very welcome. You take care. Thanksor having me. Always. "That summer" is available right now.
This transcript has been automatically generated and may not be 100% accurate.