Ballet dress (4)
I believe the answer is:
tutu
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ballet dress</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for tutu that I've seen before include "Giselle's skirt" , "South African archbishop, b. 1931" , "The old primate" , "very short garment" , "Short skirt for ballet dancer" .)