One without false ideas about top people (7)

I believe the answer is:

realist

'one without false ideas' is the definition.

'about top people' is the wordplay.
'about' becomes 're' (regarding).
'top people' becomes 'alist' (A-list**).
're'+'alist'='REALIST'

(Other definitions for realist that I've seen before include "no Walter Mitty?" , "One seeing things as they are" , "Is alert (anag)" , "Non-dreamer?" , "Pragmatist" .)

I've seen this clue in The Telegraph.

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