Hello,
I've found an address on Berenice Bejo's page, she was Peppy Miller in The Artist, and she happens to be the wife of director Michel Try your luck here:
Adéquat
(Talent Agency)
80, rue d'Amsterdam
75009 Paris
France
Phone: +33(0)1-42-80-00-42
Fax: +33(0)1-42-80-00-43