I ordered my Invitations and they arrived at my door with the Invite and an interior and mailing Envelope. My question is: Do I address the interior envelope with say: Kimberly and Guest? I have already addressed the outside envelopes with the family members name and address. So, do I leave the interior envelope blank or write the family member's name? I want to make sure that those people that are single know that they are allowed to bring a guest to the wedding! Thanks!!!