The most common and most likely answer to this crossword clue is the 8 letter word ENSEMBLE
I've seen this crossword clue in Independent
E
N
S
E
M
B
L
E
More clues leading to the result ENSEMBLE
- Musicians in costume
- Group sense I’m able when wanting leaders
- Outfit’s three points on detailed logo
- Group seen performing with Mel B on tour
- Group of three players sign contracts
- The Arles together?
- Get together when leaving after being oddly ignored by supporting players
- Musicians look like replacing first two with topless men
- Group of bluesmen playing on base, but not for all
- Musicians’ union
Buddy explains!

The straight part
We know that "Outfit" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case outfit = ensemble.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 ENSEMBLE mean?
ENSEMBLE noun- A group of separate things that contribute to a coordinated whole.
- A coordinated costume or outfit; a suit.
- (collective) A group of musicians, dancers, actors, etc who perform together; e.g. the chorus of a ballet company.
- A piece for several instrumentalists or vocalists.
- A probability distribution for the state of the system.
- (machine learning) A supervised learning algorithm combining multiple hypotheses.
- To put together in a coordinated whole.
- To perform in a musical ensemble.