Stop Les going out only half-dressed (7)

I believe the answer is:

topless

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'only half-dressed' is the definition.
I can't judge whether this defines the answer.

'stop les going out' is the wordplay.
'going out' indicates an anagram (out can mean wrong or inaccurate).
'stop'+'les'='stoples'
'stoples' anagrammed gives 'TOPLESS'.

Can you help me to learn more?

(Other definitions for topless that I've seen before include "With chest totally exposed" , "Half-naked" , "As a Page Three girl?" , "Without a shirt, vest or bra?" , "Half naked" .)

I've seen this clue in The Irish Independent.

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