A nude girl's open about being promiscuous (8,6)

Ross

I believe the answer is:

sleeping around

'being promiscuous' is the definition.

'a nude girl's open about' is the wordplay.
'about' is an anagram indicator.
'a'+'nude'+'girls'+'open'='anudegirlsopen'
'anudegirlsopen' anagrammed gives 'SLEEPING AROUND'.

I've seen this clue in The Guardian.

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