Adorn topless people (4)
I believe the answer is:
race
'people' is the definition.
'adorn topless' is the wordplay.
'adorn' becomes 'grace' ('grace' can be a synonym of 'adorn').
'topless' means to remove the first letter.
'grace' with its first letter removed is 'RACE'.
(Other definitions for race that I've seen before include "People - sprint - competition" , "The ... is not to the swift (Bible)" , "water" , "See 22" , "Run swiftly" .)