Parts of a Bai Sema are described in Thailand as being body parts: "neck", "shoulders", "chest", "hips" and "stomach". During the Ayutthaya kingdom and the following Rattanakosin era, Bai Sema would sometimes be decorated with eyes and princely crowns. The Thammayut order, which was founded by Prince Mongkut (the later King Rama IV) in 1833, developed a three-dimensional form of Bai Sema.