Top 20 Most Insane Celebrity Weight Loss TransformationsBy Tammy Salt / August 21, 2019 14. Lisa Riley thesun.co.uk Lisa Riley looks amazing and the most impressive thing about her weight loss is that she did it quite fast. She took on a 400-calories- a-day diet which was certainly not easy to follow. Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20