If you're looking to get in shape, lose weight, feel stronger, or make a major change to your life, you might want to give BBG a shot [1]. Kayla Itsines's ultrapopular fitness guide helps build strength and confidence and has produced some of the most awe-inspiring before-and-after transformation photos we've ever seen. We've been ogling her Instagram feed for years and talking to women about their experience with the workouts and healthy eating guide — here are some of our favourite transformations of 2018 so far!