the curve of the upper lip - where it curves and then there is a slight
dip.
it is in the shape of a bow, and lips are the 'love'(cupid) of your face.
hence the name "cupids bow"
some cupids bows
dip loads more... and almost go down to the bottom of the top lip (where the lips meet).
there are also lips that do not have a cupids bow, so they would just be rounded at the
top with no
dip so it would be like a mirror image of the bottom lip.
person a: you have really
nice lips
person b: thanks, yours are
nice too
person a: well not really, i dont have a cupids
bow
person b: so...