Amy Vanderbilts Etiquett Readers often write me on the question of seating their guests at dinner. The most honored male guest is always seated on the hostess right, the most honored female guest, always on the hosts right, with the next most honored to the hostess left, respectively. It is the hostess who always indicates where guests are to sit. When there are more than eight at the table, it is convenient to use place cards, and of course you may use them for parties numbering as few as six. The hostess, by the way, is supposed to remember where she is going to seat her guests. She should never have to resort to a memorandum. Dear Miss Yanderbilt (1) In addressing wedding invitations, how do you address the envelope to two sisters, both single? (2) When I write my thank you notes to my husbands relations, should I write, Dear Aunt, etc., even when I havent met them? My husband is very close to his family. (3) As I am from a distant city, the reception will be held at the grooms house and we have requested that gifts be sent there. Is it all right to display them? K. V. C., San Jose, Calif. Taking your questions in order, here are my answers (1) Address them, The Misses Clark, both on the outer and on the inner envelope. (2) Yes, address them as Dear Aunt, etc. They are now your relatives, too. (3) Yes, the wedding gifts may be displayed, with the cards removed and with gifts more or less of the same value grouped together. Checks are not displayed but a card may be propped up, reading, Check, 100, without naming the donor. Where parents and close relatives give cash gifts, the bride and groom let it be known discreetly to their friends, without mentioning the amounts. Dear Miss Vanderbilt At what age is a baby christened and is it permissible for male children to wear christening dresses? Mrs. U.S.Y., Detroit, Mich. It depends upon the denomination. I have answered part of your question above. The matter should be discussed with your clergyman. You should know that some Protestant denominations permit home christenings, but that Catholics do not, except in cases of dire emergency. Some Protestant denominations do not permit baptism until the child has reached an age of understanding. The Baptists, for example, have a dedication of babies, but actual baptism does not take place until the childs tenth year, and of his own free will. Of course, a boy may wear a christening dress. Dear Miss Vanderbilt I am sixteen and am going to have my first tuxedo. My father is holding out for the usual black but I would like to have midnight blue. He thinks thats just a fad and that Ill be sorry, but we agreed to abide by your decision. C.C., Oakland, Calif. Midnight blue for tuxedos is no fad but an established fashion for some seasons now. It looks blacker than black at night, and you are much more likely to outgrow your tuxedo than to outgrow the fashion for midnight blue.