Good to have ceremonial robe (4)

I believe the answer is:

gown

'ceremonial robe' is the definition.

'good to have' is the wordplay.
'good' becomes 'g' (abbreviation).
'to have' becomes 'own' (synonyms).
'g'+'own'='GOWN'

(Other definitions for gown that I've seen before include "Academic robe" , "Formal frock, hospital garb and ceremonial dress" , "An evening dress" , "Dress for formal occasions" , "Formal robe" .)

I've seen this clue in The Independent.

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