Face of Dotty Perkins (4)
I believe the answer is:
type
'face' is the definition.
(I have seen 'The face' mean 'type' so perhaps 'face' could also mean 'type')
'of dotty perkins' is the wordplay.
'of' indicates a hidden word.
'TYPE' can be found hidden inside 'dotty perkins'.
(Other definitions for type that I've seen before include "Print - classification" , "of a certain kind" , "Sort, kind" , "Kind, model" , "Write letters" .)