"Sleeping Beauty" princess (6)
I believe the answer is:
aurora
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sleeping beauty princess</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for aurora that I've seen before include "7 ... borealis, ... lights" , "Atmospheric luminance" , "skylights?" , "'... borealis, the northern lights (6)'" , "Light phenomenon of polar regions" .)