Lass changed trousers and shoes (7)
I believe the answer is:
sandals
'shoes' is the definition.
(sandal is a type of shoe)
'lass changed trousers and' is the wordplay.
'changed' indicates an anagram.
'trousers' is an insertion indicator (trouser can mean to steal or take).
'lass' with letters rearranged gives 'sals'.
'sals' placed around 'and' is 'SANDALS'.
(Other definitions for sandals that I've seen before include "Soles strapped to the feet" , "Open footwear" , "Light open shoes" .)