Kevin Federline
He may be best known for being Britney Spears’ ex-husband, but people still noticed his weight gain. It happened because he had stopped dieting, exercising, and dancing. When his dramatic weight gain began to affect his relationship with his sons, Federline realized he needed to make some changes. To lose weight, he signed up to join VH1’s Celebrity Fit Club 7: Boot Camp .
Chaka Khan
To shed the extra pounds, Chaka Khan adopted a vegan-liquid diet. She did it for four months and the results are truly major.