Dualstar:
Dualstar Publications
C/O Thore and Company,
1801 Century Park East,
Los Angeles,CA 90067

Fank Club MK a Ash:
Mary-kate and Ashley's Fanc Club,
13273 Ventura Blvd,
Suite 208,Studio City,CA 91604,U.S.A.
C/O Two of a Kind

Warner Bros:
Warner Bros Studio,
4010 West Olive Aventue,
Burbank,CA

E-mail:mary-kateandashley@mail.com