Kevin Federline (30 pounds) – Joined Celebrity Fit Club

Kevin Federline was a former backup dancer who gained when he married pop star Britney Spears. He was pretty fit during his dancing days, but he experienced significant weight gain over the years. He later joined “Celebrity Fit Club” and lost about 30 pounds.

Participants had to alter their eating habits and step up their fitness game. Despite his successful weight loss, Federline had a tough time keeping the weight off, and it looks like he’s back on the heavier side in more recent times. He has been married to volleyball player Victoria Prince since 2013 and has two kids together.