Cat Woman has got to be a popular costume this year, so here's our contribution to the season. If you really want to throw people off, put three of these on a headband.
Like the Mercreature Fins, Alien Antennae, and Horns in the Halloween 2012 series, these fit on a standard headband.
If you want to grab a pair right away, stop by the MakerBot Store!
Cat Ears were created by Matt.

To attach to headband, stretch and place through the T-slot, then turn so it lays perpendicular.
For best results, print with the following settings:
Infill = 10
Layer Height = .25
Shells = 1