Kylie is more outspoken while Kendall is reserved, Kylie dominates the beauty world while Kendall is all about that fash and Kylie's friends are out of the spotlight while Kendall's friends are some of the biggest stars on the planet.
Because of all these differences and more, Kylie has confessed that if Kenny weren't her sis, they probz wouldn't be friends.
"I don't think we'd be friends if we weren't sisters," she said on an episode of Life of Kylie.
She adds that she and Kendall "have different opinions. We do everything differently."
Despite this, the beauty boss went on to confirm that she and her sis get along "most of the time".
Well it's a good thing that they'll forever be bound as sisters 'cos we can't imagine a world without this duo!