Leave it to Kylie Jenner to have the last word in this argument.
Like Kardashian fans across the country, the 21-year-old reality star has been on the edge of her seat watching her older sisters, Kourtney and Kim Kardashian, battle it out on Keeping Up With the Kardashians this season. The two have been at each other's throats with all-out screaming wars and nasty insults -- including when Kim called Kourtney "the least exciting to look at."