NIKKI GOLDSTEIN has been a beauty and health editor for nearly 20 years and has written for magazines such as Elle , Marie Claire , Cosmopolitan and Vogue . Nikki has conducted one of the largest global surveys of teen and tween girls and the issues they face, and the results of which inform every aspect of GirlForce. Nikki's favorite things are yoga, chocolate and spending time with her family. She's an Earth Body Type and is fond of extravagant lounging and watching old movies. Nikki lives in Sydney, Australia with her husband Rowan and daughter Liberty. www.mygirlforce.com.