Vain and super prepared people... (9)

I believe the answer is:

peruvians

'people' is the definition.
(Peruvian is an example)

'vain and super prepared' is the wordplay.
'and' means one lot of letters go next to another.
'prepared' indicates anagramming the letters.
'vain' put after 'super' is 'supervain'.
'supervain' is an anagram of 'PERUVIANS'.

I've seen this clue in The Daily Express.

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