Term of excellence article applied to jazz fan's night attire? (3,4,7)

I believe the answer is:

the cat's pyjamas

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'term of excellence' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'article applied to jazz fan's night attire?' is the wordplay.
'article' becomes 'the' (the definite article in English).
'applied to' means one lot of letters go next to another.
'jazz fan's' becomes 'cat's' (I've seen this in other clues).
'night attire?' becomes 'pyjamas' (I've seen this before).
'the'+'cats'+'pyjamas'='THE CATS PYJAMAS'

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I've seen this clue in The Telegraph.

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