Kaz Cooke is the number one go-to advisor for Australian girls and women. Her best-selling books include Girl Stuff, Women's Stuff, Up the Duff, Kidwrangling, and a series of ebooks on women's health issues from sex to mental health and menopause. Kaz's funny, friendly style is backed by research and professional consultants- she's been a best friend to at least two generations. (Her children's book The Terrible Underpants is not quite autobiographical.)