Sleepwear (7)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sleepwear</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 nightie that I've seen before include "cover for retiring" , "Sleepwear" , "Sleeping garment" , "Light sleeping gown" , "Woman in bed in this" .)
(Other definitions for pyjamas that I've seen before include "Sleeping suit" , "Pays jam poorly to wear them" , "Sleeping-suit" , "Sleeping attire" , "Jam a spy into these at night" .)