masquerade mask
Masquerade masks were worn delicately by the prosperous class at balls. Masquerade masks had many uses including hiding one's identity.
Masquerade masks have been used in classics such as The Phantom of the Opera, Romeo and Juliet, Lone Ranger, and Gossip Girl. They are still used in many types of media today.
See also
This tag implicates mask (learn more).