Dining in style in underpants

We went to a concert at the Kimmel Center last Saturday, and dined at their restaurant, Cadence. At each end of the room there was an identical collection of paintings--maybe 12 or 16 in all, each of which looked like a different pair of ladies' underpants.A sample:



Some were thongs, some were brightly colored, others were modest old lady underpants. But unless someone can prove the contrary, they all looked like underpants to me. My companion thought so too.

The food wasn't that good, but the art work was fascinating. But why two, one set at either end?

The concert, by the way, was excellent.