Primitive painter showing topless bride's outfit (8)

I believe the answer is:

rousseau

I'm a little stuck... Click here to teach me more about this clue!

'primitive painter' is the definition.
'rousseau' can be an answer for 'painter' (I've seen this before). I'm unsure of the 'primitive' bit.

'topless bride's outfit' is the wordplay.
'topless' means to remove the first letter.
'bride's outfit' becomes 'trousseau' (I've seen this before).
'trousseau' with its first letter taken off is 'ROUSSEAU'.

'showing' acts as a link.

Can you help me to learn more?

(Other definitions for rousseau that I've seen before include "Impressionist" , "Painter, Henri - philosopher, Jean Jacques" , "Jean-Jacques --, Genevan philosopher" , "French painter known as le Douanier" , "Jean-Jacques --, Swiss-French philosopher" .)

I've seen this clue in The Everyman puzzle in The Observer.

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