Close to neckwear, item of lingerie (7)
I believe the answer is:
nightie
'lingerie' is the definition.
(nightie is a kind of lingerie)
'close to neckwear item' is the wordplay.
'close to' becomes 'nigh' (I've seen this in another clue).
'neckwear item' becomes 'tie' (I've seen this before).
'nigh'+'tie'='NIGHTIE'
'of' acts as a link.
(Other definitions for nightie that I've seen before include "Bedtime habit" , "Bedtime attire" , "put on at end of day?" , "Female article of clothing" , "one put on after dark" .)