The next time you and your girls are gathered, add fashion to the mix by bringing along this Fashion Game book: Fashion History of the 20th Century  ($35) by Florence Muller. It's a fun little book filled with questions and answers, quizzes, and matching games. Test your, and your friends' knowledge on designers like Marc Jacobs  and Zac Posen , and clothing from jeans to heels. If you have friends that think they know more about fashion than you, this is the perfect way to prove them wrong. Or right. Bring it on.