Was it all just a ploy for the only male Kardashian to book a deal with a weight-loss company? Who knows! Here's what we can say for sure: Rob gained a lot of weight after competing on "Dancing With the Stars" -- and he was not happy about it!
BING: See Rob when he was more lean
FIND: Watch Rob compete on 'Dancing With the Stars'
SEARCH: See more photos of the Kardashian clan
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