At first I thought that I was witnessing a little courtship action going on in my garden. After doing some research, I discovered that this is two females because they both have white stripes on their backs. The female on top is displaying her dewlap in a demonstration of territoriality. Not long after I took this photo, the one on the bottom ran off with the top one in hot pursuit.
Now ladies, there are enough sage leaves for everyone to soak up the sun and hunt for bugs. No need for all this posing and prima donna behavior.