I got an advanced copy of this book in exchange for an honest review from NetGalley. Thank you. This story is the author's second book (I enjoyed "Tweet Cute") that, just like the first one, is able to make a social media platform like a character itself. With her first book, Twitter was the character. Now, Instagram takes center stage. Budding Photographer 16-year-old Abigail (Abby) Day lives in the Seattle area and is crushing on one of her best friends, Leo. To help give him a nudge to finding his biological family, she agrees to sign up for a DNA service. What she doesn't count on is the results: a secret older sister that her parents didn't tell her anything about. Her sister is Savannah Tully, a fit, rule-following Instagram star that Abby feels like is her complete opposite. To learn more about Savvy (and spend more time with Leo), she goes to a camp on an island nearby. She doesn't expect to find out more about herself as well shortly after her beloved grandfather passes away. What first made me want to read this book is the author herself. I got an advanced copy of "Tweet Cute", loved it, and wanted to see what her sophomore effort was like. I just love how in each book (I've mentioned this before) that she makes social media a character. And this book made me want to continue reading even before it got to the "Camp Reynolds". It's also got some romance, but the driving subject of the book feels more like the growing sisterhood between Savvy and Abby (which I enjoyed). This book also feels realistic, like something like this could actually happen. At first, I thought one boy was going to be her love interest (even though there was no romance, but more of a friendship), but it surprised me sometimes. This is a great teen book if you're into stories about any of the following: camp, finding yourself, sisterhood, surprising romances. Also, if you were a fan of "Tweet Cute", you should DEFINITELY pick this one up, too.