Cupid's bow
The Cupid's bow is a facial feature where the double curve of a human upper lip is said to resemble a recurve bow of the sort used in ancient Greece or Rome. The name is taken from Cupid, the bow-wielding Roman god of erotic love equivalent to the Greek Eros. The peaks of the bow coincide with the philtral columns giving a prominent bow appearance to the lip. It is outlined with the vermilion border, which connects the lip skin to the facial skin.
Celebrities with a pronounced cupid's bow include Taylor Swift and Rihanna.