"I love her to death. I can't imagine life without her," a woman says about her sister. Another remarks, "I don't want anyone to kill my sister because I want to have that privilege myself." With these two comments, begins this eye-opening and entertaining new book.

New York Times bestselling author Deborah Tannen is renowned for illuminating the way we communicate–and revolutionizing relationships in the process. What she did for women and men in You Just Don't Understand , and mothers and daughters in You're Wearing THAT? , she now does for sisters in a groundbreaking book that explores one of the most powerful and perplexing relationships in our lives.

Conversations between sisters reveal a deep and constant tug between two dynamics–an impulse towards closeness and an impulse towards competition, as sisters are continually compared to each other. When you're with her, you laugh your head off, and can giggle and be silly like when you were kids. But she also might be the one person who can send you into a tailspin with just one wrong word. For many women, a sister is both.

With a witty and wise voice, Tannen shares insights and anecdotes from well over a hundred women she interviewed, along with moving and funny recollections of her own two sisters. You'll come away with a profound new understanding, as well as effective techniques to improve and accessible solutions for problems in this unique and precious relationship.