If visiting family or friends, a letter of invitation from a relative or friend can be written for the applicant. The invitation letter serves to support the applicants' genuine tourist intentions and should be provided in the form of a statutory declaration found at http://www.ag.gov.au/www/agd/agd.nsf...ry_declaration
The invitation letter should include the following information:
*relationship to the applicant;
*purpose and period of stay;
*whether the applicant will be staying with the invitee and if so, evidenced by a certified copy of lease agreement or title deeds and;
*whether the invitee will be financially supporting the applicants' stay, evidenced by a certified copy of a bank statement showing sufficient funds for the proposed period of stay.