This character has double bun hairstyle.

A bun is a type of hairstyle, typically worn by women, where the hair is pulled back from the face, twisted or plaited, and wrapped in a circular coil around itself, typically on the back of the head or neck. They can either be secured with a hairpiece, a hairnet and bobby pins. They may be tightly gathered or slightly messier and more informal. A double bun is a variation of this hairstyle featuring two of these buns.