There was a ton of speculation about whether or not Kim's little bro would be present for the nuptials and when he joined the rest of the family for Kim's wedding week in Paris, it pretty much seemed like a done deal.
The 27-year-old, who has faced a lot of scrutiny lately for his weight gain, even brought his trainer to the City of Light with him, so he'd be in tip top shape for KimYe's special day.
After the pre-wedding party in Paris, guests were flown by private jet to Florence, Italy, where the ceremony took place. Rob was apparently part of the Kardashian caravan, so when his sis was saying "I do," why was he saying "adieu"?
According to TMZ, there was some family drama in Florence and Rob decided to flee after the melee. The site says he was "in tears" at the airport as he desperately tried to score himself a seat on a flight back to Los Angeles.
Paparazzi caught up with him when he landed, but not surprisingly, he didn't have much to say.
We can't imagine what could have caused Rob to skip out on the wedding at the very last second. What do you guys think happened in Florence that made him miss the (third) most important day in Kim's life?
Gallery | Kardashians in Paris