British artist in lingerie item (3)
I believe the answer is:
bra
'lingerie item' is the definition.
(I've seen this in another clue)
'british artist' is the wordplay.
'british' becomes 'b' (abbreviation e.g. in 'BBC').
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
'b'+'ra'='BRA'
'in' is the link.
(Other definitions for bra that I've seen before include "Underwear item" , "I give a couple a lift" , "Female undergarment" , "support" , "Chest supporter" .)