Rebel Wilson lost an astounding 75 pounds last year, turning her from "Fat Amy" to "Fit Amy". The 42-year-old actress has been thrilling her followers with Instagram photos that show off her new figure. How did she achieve this incredible feat?
Read on to learn about the activities that help her stay in shape, as well as the photographs that prove they work—and don't forget to check out the 30 Top Celebrity Swimsuit Moments to become beach-ready too!