They have been animal rights advocates over the years. The twins sued Larry Flynt and Hustler magazine in 2003 for publishing photos without their permission. They have authored the books Dying To Be Healthy: Millennium Dieting and Nutrition and The Eco Anti-Diet. They have also released a series of calendars. Shane Barbi married actor Ken Wahl in 1997. Shane and Sia Barbi are their given names and they are identical twins.