Answer: decollete

AnswerCrossword Clue
DECOLLETERevealing, in a way
DECOLLETEAdjective for some evening gowns
DECOLLETEOff-the-shoulder
DECOLLETELow-necked
decollete(French) a low-cut at the neck
decollete(of a garment) low-necked.