She went to Paris on a legendary occasion (5)
I believe the answer is:
helen
'she' is the definition.
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for helen that I've seen before include ""The face the launched 1,000 ships"" , "Woman abducted to Troy" , "Spartan beauty" , "Legendary beauty of Troy" , "Woman who launched a thousand ships?" .)