Naive girl (7)
I believe the answer is:
ingenue
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">naive girl</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ingenue that I've seen before include "Naive girl" , "Artless innocent young girl on stage" , "Naive young woman" , "Naive female" , "Naive young actress" .)