The most common and most likely answer to this crossword clue is the 5 letter word HELEN
I've seen this crossword clue in The Daily Telegraph
H
E
L
E
N
More clues leading to the result HELEN
- Treasure for Paris Commune Le Havre's seized back
- Man has nearly forty days to find girl
- Brothel entrance has classical beauty
- Lover of Paris – Sainte-Chapelle? Place she is at, excited
- Girl’s broken heel close to pavilion
- Lady the lender houses
- Unveiled, she lent beauty to mythology
- ‘Psyche’ lending will show legendary Greek figure
- Classical beauty with style will secure win ultimately
- …male Leonard briefly makes for Trojan queen
Buddy explains!

The straight part
We know that "legendary Greek figure" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case legendary greek figure = helen.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.