Pyjamas are a type of casual loose clothing worn for sleeping. It is assumed that most people in the Wizarding world own a pair. Pyjamas were also an intricate part of the disguise that Ron and his brothers, Fred and George Weasley created for the Weasley family ghoul.

Horace Slughorn had emerald pyjamas. He wore them when battling Voldemort.



Ron, Ginny, Fred, and George Weasley in their pyjamas