Kendall Jenner Shared This Image Mocking Kylie Jenner On Instagram

    What else are big sisters for?!

    Kendall and Kylie Jenner have always had a playful relationship.

    And there may only be an 18 month age gap, but Kendall has always let younger sister Kylie know who's boss.

    I mean, what else are big sisters for?

    So when Kendall saw this edit of Kylie making its way around Instagram, she couldn't resist the opportunity for some gentle mocking.

    She reposted it alongside the caption: "If only."

    Some things never change. ❤️