Unconcerned to be popular, standing out from the crowd? (11)
I believe the answer is:
indifferent
'unconcerned' is the definition.
(similar in meaning)
'popular standing out from the crowd?' is the wordplay.
I cannot really see how this works, but
'popular' could be 'in' and 'in' is found in the answer.
'from' could be 'e' (I've seen this in other clues) and 'e' is located in the answer.
'crowd?' could be 'd' and 'd' is located in the answer.
This explanation may well be incorrect...
'to be' acts as a link.
(Other definitions for indifferent that I've seen before include "Apathetic" , "neutral" , "Unconcerned" , "Uninterested" , "Neither good nor bad" .)