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Both the Lee sisters are now fully grown, matured ladies who are in the prime of their young adulthood. Harin was born on January 9, 1995, four years after CL was. Despite the age gap, the two seem to share a close sisterly bond. It's always good to see siblings getting along so well! 

CL uploaded a happy birthday post just for Harin with a caption that reads, "HAPPY BIRTHDAY MY MY LOVE." How cute is that? Let's follow CL's lead and wish the gorgeous Harin a happy birthday as well! 

HAPPY BIRTHDAY MY LOVE @_harinlee

A photo posted by CL (@chaelincl) on Jan 8, 2016 at 11:35am PST

HUH

A photo posted by ??? (@_harinlee) on Jan 8, 2016 at 4:41am PST