Kayla Itsines

Born 21 May 1991 (age 28) Adelaide, South Australia, personal trainer, author, and entrepreneur with Greek heritage. She is the creator of a series of fitness ebooks titled Bikini Body Guides, and a meal-planning and workout app, Sweat with Kayla. Sweat with Kayla generated more revenue than any other fitness app in 2016. She has one younger sister, Leah, who is a personal trainer and food stylist. Itsines' family heritage is Greek, and she identifies herself as Greek.