Clue: Workers dressing very Gallic femme fatale (9)
Answer: TEMPTRESS
Explanation: Definition: femme fatale
An envelope ('dressing') of TRÈS ('very Gallic') in TEMPS ('workers'). Not so long ago, I revisited *Framboise* from *Tirez sur la Pianiste*; here is an opportunity for the other very memorable song from a Truffaut film, Jeanne Moreau singing ** in *Jules et Jim*.