noun
Santa cosplay (esp. female)
Colloquial term for dressing up as Santa Claus, especially by women. Often used in contexts like Christmas parties, events, or social media.
今年のクリスマスパーティーはサンタコスで参加しようかな。
I'm thinking of joining this year's Christmas party in a Santa cosplay.
彼女のサンタコス姿がSNSで話題になった。
Her Santa cosplay look became a hot topic on social media.