Grow part of wicket that’s wearing at front (8)
I believe the answer is:
increase
'grow' is the definition.
(I've seen this before)
'part of wicket that's wearing at front' is the wordplay.
'part of wicket' becomes 'crease' (cricket).
'that's wearing' becomes 'in' (as in being 'in' certain clothes).
'at front' is a charade indicator (letters next to each other) (some letters go in front of others).
'crease' put after 'in' is 'INCREASE'.
(Other definitions for increase that I've seen before include "Become bigger or greater in amount" , "What's more" , "'Augment, expand (8)'" , "Grow, add to" , "Multiply" .)