Ostentatiously stylish (6)
(Other definitions for flashy that I've seen before include "Cheaply ostentatious" , "Showy but empty; Has fly (anag.)" , "Flamboyantly attractive" , "Vulgar" , "Loud" .)
(Other definitions for swanky that I've seen before include "Elaborately fashionable" , "Swish" , "Boastful" , "Proud" , "Ostentatious" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ostentatiously stylish</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for flash that I've seen before include "Scintillate" , "Tasteless" , "type of photography" , "Moment" , "Conspicuously display" .)