Ya-Yas in Bloom - Rebecca Wells

http://www.powells.com/biblio/17-0060953659-0 - The third book in the series including Little Altars Everywhere and The Ya-Ya Sisterhood. This one recounts how the Ya-Yas first became friends with each other and proceeds through the Petite Ya-Yas (their children) and the Tres Petite Ya-Yas (their grandchildren). Each chapter is almost its own little self-contained story, though they do thread together fairly well. Very fun (like the previous two) and a fast read. Definitely a good pool-side companion.