Unusual glee, eg, in light attire (8)

I believe the answer is:

negligee

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'light attire' is the definition.
'negligee' can be an answer for 'attire' (I have seen 'informal attire' mean 'negligee' so perhaps 'attire' could also mean 'negligee'). I am not certain of the 'light' bit.

'unusual glee eg in' is the wordplay.
'unusual' indicates an anagram.
'glee'+'eg'+'in'='gleeegin'
'gleeegin' is an anagram of 'NEGLIGEE'.

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(Other definitions for negligee that I've seen before include "Flimsy nightwear" , "Filmy dressing gown" , "lacy garment" , "Lady's diaphanous dressing gown" , "Lady's loose gown" .)

I've seen this clue in the Sydney Morning Herald.

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