Maybe Khloe was the first person to inspire Kylie's lip transformation.
According to one source, Kylie got lip injections after her older sister took the plumper plunge, and her dad Bruce was livid.
It would come as no surprise; Kylie recently dubbed Khloe as an influential presence in her life, calling her sister a "huge mother figure."
Let's take a trip down memory lane. Here, notice Khloe's thinner pout as she arrived in LAX with then-husband Lamar Odom.
Khloe sported slimmer lips for a Clippers vs. Houston Rockets game as well.
A throwback to 2008, Khloe’s lips appear even thinner for the 2nd Annual Matt Leinart Foundation Celebrity Bowling Night.
Then, bam! Noticeably fuller lips. Is it injections or just impressive makeup talent? You decide.