Celebrity going topless for sailor (3)
I believe the answer is:
tar
'sailor' is the definition.
(tar is a kind of sailor)
'celebrity going topless' is the wordplay.
'celebrity' becomes 'star' (I've seen this before).
'going topless' means to remove the first letter.
'star' with its first letter removed is 'TAR'.
'for' acts as a link.
(Other definitions for tar that I've seen before include "Product of smoking cigarettes" , "Kind of rat for sailor" , "Sailor - laid on road" , "Sticky cigarette residue" , "Product of burning tobacco" .)