Kayla Itsines is a personal trainer with over 10 million followers on Instagram for herself and her Bikini Body Guide. The BBG has grown into a phenomenon, with women all over the world - many calling themselves "Kayla's Army" - following her workout and diet plan. Kayla lives in Adelaide, Australia.
Books by Kayla Itsines
The Bikini Body: 28-Day Healthy Eating & Lifestyle Guide