Crossword Genius

Occurrence at Wimbledon featured in best-seller, unusually stylish writing (6,7)

Ross

I believe the answer is:

belles lettres

'stylish writing' is the definition.
(French term for fine or beautiful writing)

'occurrence at wimbledon featured in best-seller unusually' is the wordplay.
'occurrence at wimbledon' becomes 'let' (type of tennis serve).
'featured in' is an insertion indicator.
'unusually' indicates an anagram.
'best'+'seller'='bestseller'
'bestseller' anagrammed gives 'bellestres'.
'let' put within 'bellestres' is 'BELLES-LETTRES'.

(Other definitions for belles lettres that I've seen before include "literary studies" , "Literary works" , "writings" .)

I've seen this clue in The Times.
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