The most common and most likely answer to this crossword clue is the 9 letter word SARTORIAL
I've seen this crossword clue in The Guardian
S
A
R
T
O
R
I
A
L
More clues leading to the result SARTORIAL
- Seamstress initially having skill and independence in exam about tailoring
- After revamping rotas, Iran’s ready for tailors
- As tailor, may be? That’s about right
- Relating to a thigh muscle of sailor turning round craft
- Tailors are mostly upset by this description of their trade
- Representing a tailor’s? About right
- Representing tailor’s art largely!
- Tailors are, not entirely surprisingly, relating to clothes
Buddy explains!

The straight part
We know that "As tailor, may be? That’s about right" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case as tailor, may be? that’s about right = sartorial.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 SARTORIAL mean?
SARTORIAL adjective- Of or relating to the tailoring of clothing.
- Of or relating to the quality of dress.
- Of or relating to the sartorius muscle.