The most common and most likely answer to this crossword clue is the 6 letter word TWEEDS
I've seen this crossword clue in The Daily Telegraph
T
W
E
E
D
S
More clues leading to the result TWEEDS
- Type of clothes that would be quaint on daughter and son
- Temperature rising in sweaty journalist’s wool clothing
- Duke’s seen for a time in online messages with posh clothing
- Precious case for duchess’s customary country wear
- You and I wearing Edward’s country outfit?
- Affectedly quaint dresser’s extremely woollen clothes
- Country clothes precious to police officer out of uniform
- Hunter’s habit perhaps put an end to soft wimps
- Weak ineffectual boys oppressed by those with no socks or trousers
- Cute plainclothes officer in country attire
Buddy explains!

The straight part
We know that "country attire" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case country attire = tweeds.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 TWEEDS mean?
TWEEDS noun- A coarse woolen fabric used for clothing.