The 33 year-old reality TV star also confirmed that her baby bro's absence was down to him feeling self-concious about his weight.
Since Kim Kardashian and Kanye West tied the knot back in May, many people have speculated as to why her younger brother, Rob, chose to skip the ceremony even though the rest of the famous family was in attendance.
Rob missed Kanye and Kim tying the knot in Florence, Itlay
The celebrity couple's big day, which occurred in Florence, Italy, looked to be a magical occasion, but Rob's absence has caused rumours to surface that claim there is a rift within the Kardashian. Well Kim has finally put the story straight, revealing that her 27 year-old sibling told her he wouldn't be attending the wedding via email.
"He sent me a long email the morning of the wedding saying that he was going to leave. There was no fight," the 33 year-old reality TV star said to host Andy Cohen on 'Watch What Happens Live.' "I just thought, 'You know what, this is my day, I'm not even going to worry about it.'"
Kim also confirmed that a big reason her baby bro bailed on her big day was because he was self-conscious about his weight.
"I totally understand that he wouldn't want to see a lot of people if he was feeling uncomfortable and you can only pray and wish that someone would not miss out on more memories in life, because life is about memories," she explained.
Rob felt self-conscious about his rapid weight gain
Although Mrs Kanye West does seem to be very understanding, she did admit that Rob feeling sorry for himself does 'frustrate' her.
"My brother and I are so close - he's one of my best friends. I try to encourage him but once you don't make that change don't for so long, I get frustrated and my patience runs out," said Kim. "I'm definitely a tough love kind of person. If I don't like something that's going on in my life, I change it, and I don't sit and complain about it for a year."