Fashionably old-fashioned (5)
I believe the answer is:
retro
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fashionably old-fashioned</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for retro that I've seen before include "Imitating an older style" , "Predatory fish" , "recapturing the past" , "Looking back" , "bit of nostalgia" .)