Imagined Lauren being cast (6)

I believe the answer is:

unreal

'imagined' is the definition.
('unreal' can be similar in meaning to 'imagined')

'lauren being cast' is the wordplay.
'being cast' indicates an anagram.
'lauren' with letters rearranged gives 'UNREAL'.

(Other definitions for unreal that I've seen before include "Not genuine" , "Dreamlike" , "Illusory, imaginary" , "Artificial, insubstantial" , "Phantasmagorical" .)

I've seen this clue in The Telegraph.

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