If you want to talk anachronisms, how about them zippers?
They weren't invented until the early 1900s. Before this, fasteners were buttons or hooks and eyes.
I realize that this isn't the SCA, but you would think they could be a wee bit less obvious about them, wouldn't you?
Luciaphil
(who griped about Kelly McGillis' multiply pierced ears when she was playing a simple Amish woman in "Witness").