Criticise a mother's hats (7)

I believe the answer is:

panamas

'hats' is the definition.
(panama is a kind of hat)

'criticise a mother's' is the wordplay.
'criticise' becomes 'pan' (informal term meaning to criticise heavily).
'mother's' becomes 'ma's' (Ma is another word for mother or mum).
'pan'+'a'+'mas'='PANAMAS'

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

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