Crossword Genius

Top boys I muddle up (5,6)

Ross

I believe the answer is:

middy blouse

'top' is the definition.
(middy blouse is a kind of top)

'boys i muddle up' is the wordplay.
'up' indicates an anagram.
'boys'+'i'+'muddle'='boysimuddle'
'boysimuddle' anagrammed gives 'MIDDY BLOUSE'.

I've seen this clue in The Independent.
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