The Popularity Papers: Book Four: The Rocky Road Trip of Lydia Goldblatt & Julie Graham-Chang

It's summertime, and Lydia and Julie are going on a road trip! After all the ups and downs of their first year in junior high, they're looking forward to seeing the sights and getting some new perspective on their quest for popularity. Papa Dad and Daddy will provide the transportation, and Lydia and Julie will provide the entertainment.
At first they use their Powers of Observation to catalog the traditions and oddities of each new location they visit, but soon their attention turns to parents and negotiating sensitive family dynamics. By the time the duo hits familiar streets again, they may have to accept some uncomfortable truths, but their journey is infused with the humor, heart, and truthfulness that Amy Ignatow is known for.