Remove one’s clothes (5)
(Other definitions for strip that I've seen before include "Series of cartoon pictures - undress salaciously" , "Divest - team's garb" , "Take off one's clothes" , "Remove (paint)" , "sports outfit" .)
'remove one's clothes' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for undress that I've seen before include "Strip, take off clothes" , "Remove clothes, strip" , "Sunders (anag)" , "Remove one's clothes" , "Nudity" .)
(Other definitions for disrobe that I've seen before include "bare" , "Get undressed" , "Undress" , "Remove formal clothing" , "Strip" .)