Porgy's woman
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">porgy's woman</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 bess that I've seen before include "Nickname for English queen" , "Our Good Queen" , "Elizabeth (dim.)" , "Operatic mate for Porgy" , "George Gershwin opera 'Porgy and . . . .'" .)