Star pasties, with a D ring mounted in the center. This listing is for a pair in black patent leather. Shiny and sleek, and goes with everything. 

Listing is for one pair.
Dimensions: 3.75" wide.
Will cover a 2.5" circle.

Other colors are available, and I do take requests.

Hardware options:
Silver - as pictured
Brass - brass rivets and brass D ring
Black - black rivets and black D ring.