Khloe Kardashian lashed out on Twitter for people making fun of Rob Kardashian's weight gain but reportedly the harsh comments about her brother really bothered her and even made her cry. According to Hollywood Life, the 29-year-old reality star spent her flight to Paris in tears.

"She's so protective of her family and took a moment to cry on her flight to Paris just thinking about how awful Rob must feel," a source told Hollywood Life. "She cried for him because she knows somewhere he's lost touch and let his weight get out of control."

The comments started after Rob was spotted at a Paris airport. It was the first time he was photographed by the paparazzi in months.

"But that doesn't mean he should be talked about and criticized," the source added. "She'd much rather take the heat about anything than let her family be smeared by the media."

"She feels awful for Rob because this is NOT how he wants to look in general, nor for his sister's wedding," the source continued. "He already feels like s**t and for the media to continue to f**k with him is just pure evil."

The outspoken Khloe vented on Twitter, posting, "I love you @robkardashian," before bashing the media and their coverage of Rob's weight.

"Some of you people are disgusting for calling others names and picking on them... You should be ashamed of your self. Your words are cutting deeper then you know and are possible leaving lifetime scars... What shallow souls some of you are. It's sickening to critique anyone off of their appearance. Grow up!" she tweeted.

Rob also lashed out on Twitter and slammed claims that he went to a fat camp.

"so i found out i was trending for being fat... thank you all it really made my day :)," he posted.

He continued, "and to the blogs saying I went to fat camp or rehab LOL then why am I still fat u fools??? Y'all must have run out of real news. 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."

A few days later, he tweeted that he was off to the gym.

Rob and the rest of the Kardashian/Jenner clan are in Paris for Kim Kardashian and Kanye West's wedding.