Brute's returning all glam in acrylic trousers (6)
I believe the answer is:
animal
'brute's' is the definition.
(synonyms)
'returning all glam in acrylic trousers' is the wordplay.
'returning' is a reversal indicator.
'trousers' indicates the answer is hidden within the clue (trouser can mean to steal or take).
'lamina' can be found hidden inside 'all glam in acrylic'.
'lamina' written backwards gives 'ANIMAL'.
(Other definitions for animal that I've seen before include "It shares the world with vegetable and mineral" , "Animate being" , "Man or beast" , "lamb, perhaps" , "Creature having voluntary movement" .)