The most common and most likely answer to this crossword clue is the 7 letter word POSHEST
I've seen this crossword clue in The Times
P
O
S
H
E
S
T
More clues leading to the result POSHEST
Buddy explains!
The straight part
We know that "Most stylish" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case most stylish = poshest.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.
What does POSHEST mean?
POSHEST adjective- Associated with the upper classes.
- Stylish, elegant, exclusive (expensive).
- (usually offensive) Snobbish, materialistic, prejudiced, under the illusion that one is better than everyone else.