Top 20 Most Insane Celebrity Weight Loss TransformationsBy Tammy Salt / August 21, 2019 7. Melissa Joan Hart womenshealthmag.com Melissa Joan Hart is another celebrity who shocked the world with her weight loss transformation. She lost a total of 75 pounds in 2014 and she says that her step-sister inspired her to do it. Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20