Ashlee Simpson – Diet  & Exercise/50 pounds 

When Ashlee Simpson entered the industry, she was already skinny.  The only time Simpson became quite heavy was when she became a mom. Eating everything she wanted was great before she gave birth but once her kids were born, she knew it was time to get her old body back. She lost weight the old fashioned way by hitting the gym and eating healthy. She reportedly lost around 50 pounds and these days, can you even tell that she is a mother of two already? In 2018, Ashlee was given her very own reality TV show titled, Ashlee+Evan.