Kim recently shared an Instagram that blended Kylie's and her faces into one, and the resemblance – complete with long lashes, a plump pout and arched brows – is uncanny.
Despite their similarities now, Kylie wasn't always trying to emulate her big sis.
Before the days of sexy bikini selfies, lip fillers and engagement rumors, Kylie and her sister Kendall were just tweens getting busted for making fun of Kim's diva-like tendencies in an early Keeping Up with the Kardashians episode.
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Happy (almost) 18th birthday, Kylie!