One thing that makes these two girls different are their eyelids.
The asian population has worked long and hard to achieve the eyelids on the left, from tape to glue to stitches. I don't have a problem with that - your face, your choice.
My issue is the terminology: MONOlid and DOUBLElid.
These girls both have one visible lid - it's not like Lily Cole has an extra flap of skin hugging her eye, it's ONE. Hence, both monolids. The word you are looking for, people, is CREASE. Lily Cole has a DEFINED CREASE. Hye Park doesn't. And she's equally beautiful.
DIE MONOLID DIE!