### Clue: Officer allowed in river baring chest (9)
### Answer: DECOLLETE 
 ### Explanation: Definition: baring chest 
 [ COL(abbrev. for "colonel", a military officer) + LET(allowed) ] **contained in**(in) DEE(any of the rivers with the same name in the British Isles, and 2 in Australia).
Answer: Descriptive of a garment with a low neckline baring (partially) the female chest.
Something that's looked down on by members of both sexes.