The hats on these four statues reminds me a lot of the Cambodian Apsaras. Things in South East Asia have a tendency to sort of blend together as you go from country to country. As similar as they might appear to be, I doubt there's much relation between the two. Their poses are, quite peaceful though.
They're located in a small temple not far from Mt. Popa, whose name I couldn't really find. Such is the trouble of traveling around Burma. With such a proliferation of Buddhist structures, the information is not yet readily available via Google. This place seemed almost more so like a temple along with its own temple workshop, churning out Buddhist statues.