I do not tend to be a big fan of non-fiction, but I make the exception for humor writers. In my opinion, Jen Lancaster is pretty dang funny, but humor writing is a "funny" thing. One person's side-splitter is another person's curled lip and/or eye roll. I am a huge fan of sarcasm and shock (well, not too much shock--I'm pretty modest.) But I love when people can tell the stories of crazy things that happen to them, especially when they can be honest about themselves and their short comings.
Last summer I read Lancaster's Bitter is the New Black and Such a Pretty Fat. It is not necessary to read these books before Pretty in Plaid, but all three books are pretty quick reads. In Pretty in Plaid, Lancaster writes about growing up, using the context of her favorite/most memorable outfits. This book will particularly appeal to those who can relate to 80's fashion, etc. In every story, Lancaster writes about herself with honesty and humor. She has a really strong view of the world, but she is open about her flaws.
I recommend this book for women who want to laugh. This is definitely not a book for the guys and not for children. While Lancaster is modest about sex, she does have a foul mouth and she drops several f-bombs. She is funnier than heck though and all her books make a great summer read. You can learn more about Jen Lancaster on her website http://www.jennsylvania.com.