Who am I to argue with Chris? Thing is, one of the links appearing in Chris' response explains "...Fans were popular, from the 1520s and were useful for cooling, protection from sparks and insects. (At Home in Renaissance Italy, p240)."
Seems they had a long and glorious history during the Renaissance;
Where fannes, and flappes of feathers fond,
to flit away the flisking flies,
As taile of mare that hangs on ground,
when heat of summer doth arrise,
The wit of women we might praise,
For finding out so great an ease.
But seeing they are stil in hand,
in house, in field, in church, in street,
In summer, winter, water, land,
in colde, in heate, in drie, in weet,
I judge they are for wives such tooles
As bables are in playes for fooles
( "Pleasant Quippes for Upstart Newfangled Gentlewomen"... Author unknown)
Any attendant decoration was entirely the Lady's choosing... (Not much has changed, no?)