In her exclusive new interview with PEOPLE, the 31-year-old opened up about the physical differences she has with her super petite sisters (Khloe is 5'10 and Kim is just 5'3, for example) and how she never let it get her down.
"I knew I didn't look like my sisters and I didn't have those shapes, but I didn't think that was wrong," she tells them. And she was never made to feel that way. "I had parents who were incredibly loving and nurturing and always made me feel beautiful so I never really questioned that," she continued.
Unfortunately, after the success of Keeping Up With The Kardashians, Khloe quickly found that when you have the eyes of the entire world on you, people can be very critical. "I didn't realize I was the 'fat' sister until I went on TV and the media started saying that about me," she revealed, saying before the show started, she actually felt like she was in really good shape.
Eventually, she just started making the joke about herself to beat people to the punch, even though she knew in her heart and her mind that she wasn't fat, it was hard not to let the comments get to her. "I almost let that take ownership of me," she confesses, although in reality, "I wasn't fat; I wasn't obese. But I would let society make me believe that I was."
The good news is that Khloe now knows how insanely hot (and awesome) she is and she doesn't really care what anybody thinks, as long as she feels good about herself.