Shirt and tie restyled — in this decade? (8)
I believe the answer is:
thirties
'this decade?' is the definition.
(thirties is a kind of decade)
'shirt and tie restyled' is the wordplay.
'and' is a charade indicator (letters next to each other) (I've seen this in other clues).
'restyled' is an anagram indicator.
'shirt' put after 'tie' is 'tieshirt'.
'tieshirt' is an anagram of 'THIRTIES'.
'in' is the link.
(Other definitions for thirties that I've seen before include "US Depression era, the ''hungry ... ''" , "Nineteen thirty to nineteen thirty nine" , "The decade described as hungry." .)