Art-class subjects (5)
I believe the answer is:
nudes
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">art-class subjects</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 nudes that I've seen before include "Unclothed people" , "Naked figures in paintings" , "People without clothes on" , "They wear nothing" , "Naturists" .)