Marx's fashionable circle (5)

I believe the answer is:

chico

'marx's' is the definition.
(chico marx was a marx brother)

'fashionable circle' is the wordplay.
'fashionable' becomes 'chic' (I've seen this before).
'circle' becomes 'o'.
'chic'+'o'='CHICO'

(Other definitions for chico that I've seen before include "Eldest of the Marx Brothers" , "A Marx brother" , "One of the Marx Brothers" , "One of Groucho's brother" .)

I've seen this clue in The Telegraph.

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