What is the author's style in Keep in Touch: Letters, Notes, and More from the Sisterhood of the Traveling Pants by Random House?

Keep in Touch is not a novel, but rather a collection of notes and letters to, from, and about each of the four main characters. As such, the language and tone change to fit the personality of the character who writes each individual piece. The earliest entries are from the girls' childhoods and the language is appropriately childish, including misspelled words in one instance. As the book progresses, each character's individual personality becomes clear through the writing style, choice of words and tone of their communications. For example, Tibby is articulate from a very early age and shows an impressive vocabulary in her plea to be released from playing the piccolo, while Lena's sweet personality comes through in her notes.

The book is designed as a companion piece to the novel The Sisterhood of the Traveling Pants and does not stand alone as a self-contained story. For that reason, it would have little meaning for someone who has not read the original book because while the reader gets a sense of the characters' personalities and the events that take place in their lives, many things are left unexplained or up in the air. For example, it is presumed that someone who has read the original novel would know about the specific difficulties between Bridget and her parents, but Keep in Touch does not explain the exact nature of the apparent strain in their relationship.