Fears spread about party hats (7)

I believe the answer is:

fedoras

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

'fears spread about party' is the wordplay.
'spread' is an anagram indicator.
'about' means one lot of letters goes inside another.
'party' becomes 'do' (do is a kind of party).
'fears' anagrammed gives 'feras'.
'feras' placed around 'do' is 'FEDORAS'.

(Another definition for fedoras that I've seen is " Felt hats with creased crowns".)

I've seen this clue in The Telegraph.

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