Will blush given they're all naked — it's unreal (8)
I believe the answer is:
illusive
'unreal' is the definition.
(similar in meaning)
'will blush given they're all naked it's' is the wordplay.
I cannot really see how this works, but
'will' could be 'll' (contracted form, as in 'he'll' - 'he will') and 'll' is found within the answer.
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
(Another definition for illusive that I've seen is " unreal".)