Mounted horse and finally rode like Lady Godiva? (4)
I believe the answer is:
nude
'like lady godiva?' is the definition.
(I've seen this in another clue)
'mounted horse and finally rode' is the wordplay.
'mounted' shows that the letters should be reversed in order (in a down clue, letters mounted up).
'horse' becomes 'dun' (I've seen this before).
'and' says to put letters next to each other.
'finally' says to take the final letters.
The last letter of 'rode' is 'e'.
'dun' backwards is 'nud'.
'nud'+'e'='NUDE'
(Other definitions for nude that I've seen before include "Flesh-coloured" , "not in gear" , "Undressed" , "Appearing as nature intended?" , "In the altogether" .)