Daily Mail has more (
http://www.dailymail.co.uk/tvshowbiz/article-2632399/Rob-Kardashian-steps-public-time-months-mother-Kris-Jenner-fly-sisters-wedding.html)
I feel bad for him. It does have to be really hard being in that family, and I feel bad for Bruce as well. Both Rob and Bruce didn't seem that into the limelight and fame, but kind of along for the ride. Now they're both so public, and they don't have a choice.
I don't think Rob gained weight on purpose (for a publicity deal, or to get lapband or something). He's been extremely private for over a year, deleting all his social media, not appearing much on the reality shows. Something about him just seems so sad. He used to be a major cocky ass, but sometimes people overdo it to compensate for deep insecurities - maybe he's dealing with that now. Hope he gets better.