Fashion designer with winning clothing male modelled in advance (7,4)
I believe the answer is:
quantum leap
'modelled in advance' is the definition.
I don't know anything about this answer so I cannot tell whether this works.
'fashion designer with winning clothing male' is the wordplay.
I cannot quite see how this works, but
an anagram of 'male' is 'mlea' which is located in the answer.
'winning' could be 'up' (eg being up at half time in football) and 'up' is found in the remaining letters.
'fashion designer' could be 'quant' (I've seen this before) and 'quant' is found in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for quantum leap that I've seen before include "Sudden significant advance - breakthrough" , "Sudden spectacular advance" .)