Hubert de Givenchy will design Arietta's simple white crepe wedding dress, but she hasn't yet made up her mind about the veil. She still has time. The wedding invitations are just this minute in the mail.
Arietta comes from two families of beautiful women. Her mother, Lita, is an acknowledged beauty of international society, and her two late aunts on her father's side, Eugenia Livanos Niarchos and Tina Livanos, whose husbands included the Duke of Marlborough and those two most powerful Greek tycoons, Aristotle Onassis and Stavros Niarchos, were both noted for their loveliness.
In London, at her house in Knightsbridge, the lively Marchioness of Dufferin and Ava, the Guinness heiress who is known to her friends as Maureen, gave an intimate dinner -- a mere 20 were invited -- in honor of her dear friend, Her Majesty Queen Elizabeth, The Queen Mother, known to her British subjects, who are quite gaga about her, as the Queen Mum. We all know the Queen Mother always dolls herself up, thank God, and on this particular night she was really a sight to see in a pale green (the Brits call it Eau de Nile) silk taffeta gown worn with diamonds everywhere, glorious pear-shaped diamond earrings the size of a strong man's thumb, more sparklers at her wrist and a spectacular five-strand diamond necklace, very close to blinding, nestling above her bosom. She looked every inch a Queen and nowhere near her 93 years.