How many movies have André Fonsny and Mathilde Seigner collaborated on?

They have worked on 2 movies together! Their first movie together was Thirty-Five Something (2005) while their highest rated movie together was Blame It on Mum (2009). They have not worked together since Blame It on Mum (2009).

Blame It on Mum (2009)

Crew
Production Design
Role
Alice Celliers

Thirty-Five Something (2005)

Crew
Production Design
Role
Juliette Fischer