Rob Kardashian skipped out on his big sister’s extravagant wedding because he was just too embarrassed to take pics due to his new extreme weight gain. According to his celebrity trainer Gunnar Peterson, Rob vowed to hit the gym every single day until he’s back to his normal weight. Gunnar says rob is “locked and loaded” and that he plans on showing him NO mercy with hours of intense cardio, resistance training and various other work-outs to get his old bod back ASAP.