Rob took to his Twitter account May 20 to address comments about his weight gain and rumors that he had attended 'fat camp.' Much of the the talk came after the reality TV star was photographed at Los Angeles International Airport on May 19, photos that caused many to buzz that Rob appears to have gained more weight. Reuters

Kim Kardashian and Kanye West’s wedding video will unfortunately be down one Kardashian.

Us Weekly reports that Rob Kardashian flew back to L.A. ahead of his sister’s wedding to West in Paris. It was reportedly a last-minute decision, made just a few hours before the ceremony began.

A source speaking to the Us said that Kardashian left Paris on Saturday morning, and arrived in L.A. just after Kim and West exchanged vows at Forte di Belvedere.

Though much of the Kardashian-Jenner family and friends have been flooding their social media accounts with images from their pre-wedding festivities, Kardashian has remained absent from basically all pictures coming from the event. He has also stayed clear of the paparazzi capturing numerous images of his mother, sisters and brother-in-law as they took in the sites of Paris and prepared for the weekend nuptials. Kardashian didn’t even attend a family lunch at Hotel de Costes on May 21 or a morning brunch at Valentino's Chateau de Wideville on May 23.

One source revealed that Rob was spotted in the lobby bar of the George V hotel in Paris on May 23. The witness aid he appeared to be in good spirits and was eating with his stepfather Bruce Jenner, his nephew, niece Mason Disick and Penelope Disick, his stepbrother Brandon Jenner and some other friends.

Kardashian has kept an extremely low profile over the past few months. But after being photographed in the airport on his way from L.A. to Paris, Rob took to his Twitter account to address comments on his weight and rumors that he had attended a weight-loss camp. "First, I don't believe in rehab or therapy or anything of that sort and second, I'm a grown man and will work on myself when I choose," he tweeted.