Sisterhood Everlasting (Sisterhood of the Traveling Pants)

Carmen, Tibby, Bridget, and Lena have been friends since they were born within three weeks of one another to moms who met in a pregnancy class. They've grown up side by side, with a friendship so strong that it was a touchstone at the center of their lives even when all else failed. Now their story continues, years after we saw them last in Forever in Blue. In their late twenties, and struggling to figure out their adult identities, they've settled far apart--Bridget in San Francisco, Lena in Providence, Carmen in New York City, and Tibby abroad. In a much-needed attempt to reconnect, Tibby sends them all plane tickets to meet in Santorini, where they share many memories. But when the trip takes an utterly unexpected turn, the sisters must cling together to discover if friendship really can last forever.