Completely fashionable pet travelling to Oz (2,4)
I believe the answer is:
in toto
'completely' is the definition.
(I've seen this in another clue)
'fashionable pet travelling to oz' is the wordplay.
I cannot quite understand how this works, but
'fashionable' could be 'in' (in can mean fashionable or trendy) and 'in' is present in the answer.
'to' is present in the answer.
The remaining letters 'to' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for in toto that I've seen before include "Altogether, completely" , "overall" , "All told" , "Wholly" , "As a whole (Latin)" .)