lookupmydress:

In the 18th century, the hand fan was both utilitarian, as well as decorative. There were all kinds of fans, from the extremely plain paddle fans made from paper or wood, to the most ornate made of the finest silk and adorned with fine embroidery or painting.

A lady was never seen in public without her fan, for not only was it used as a device for cooling oneself, but it served as a means of discrete and quiet communication. Both men and women understood the “language of the fan” and used it to communicate some very private sentiments while in the midst of some very public places.

The following is a list of some of the most commonly understood fan gestures.

A fan placed near the heart: “You have won my love.”
A closed fan touching the right eye: “When may I be allowed to see you?”
The number of sticks shown answered the question: “At what hour?”
Threatening gestures with a closed fan: “Do not be so imprudent.”
Half-opened fan pressed to the lips: “You may kiss me.” Et cetera…