Innocent lass, German girl, gets naked on leaving Germany (7)
I believe the answer is:
ingenue
'innocent' is the definition.
(I've seen this before)
'german girl gets naked on leaving germany' is the wordplay.
'german girl' becomes 'Inge' (German girl's name).
'gets' becomes 'finds' (finding is a kind of getting).
'naked' says to take the centre (outside letters removed so centre is unclothed).
'on leaving germany' becomes 'ue' (I am not sure about this - if you are sure you should believe this answer much more).
The middle letter of 'finds' is 'n'.
'inge'+'n'+'ue'='INGENUE'
'lass' acts as a link.
I am not very happy about this link. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for ingenue that I've seen before include "young woman lacking experience" , "Inexperienced young woman" , "Artless innocent young girl on stage" , "Unsophisticated young female" , "Naive girl" .)