Meaning of “have (got) sth on” - Learner’s Dictionary

have (got) sth on

phrasal verb with have uk us strong /hæv/ weak /həv, əv, v/ verb (past tense and past participle had, present tense singular has)

B1 to be wearing something:

She only had a bikini on.

(Definition of “have (got) sth on” from the Cambridge Learner’s Dictionary © Cambridge University Press)