MUCK-RAKING is something P.S. delights in, but we would never stoop to asking a lady her age - especially when she was about to get married. Bride-to-be Frederique Deleage, had no qualms about admitting hers - 47 - when she told us of her plans to marry long-standing boyfriend Victor Mehra in Ubud, Bali at the end of next month. ''When you get married at my stage of life you are doing it for love and I want to make sure that it is a romantic and spiritual wedding,'' the businesswoman and beauty therapist added philosophically. Officiating the nuptials will be Amil, the Hindu priest who wed Mick Jagger and Jerry Hall and who designs Balinese houses for the likes of fellow pop star David Bowie - when he is wearing his other hat as an interior designer. Ms Deleage was swift to insist the ceremony was going to be a Hollywood-style union because of Amil's connections and the fact the bride and groom and some of the 25-odd guests would be in Balinese costume. ''Amil is an old friend of ours - I have been coming to Bali for years - and he does not do this for anybody. He is doing this as a favour for us because we have known him for a long time.'' The couple will be married in a ceremony in the jungle followed by a picnic to celebrate. The wedding party will sail around the island in a century-old sailing boat the following day. ''I want to have a religious wedding; this is spiritual and romantic thing for me. I am a Catholic but I do not practise it,'' Ms Deleage added. But as Jagger and Hall discovered, a wedding in the Bali sunshine counts for little in the eyes of pen pushers across the world and she is steeling herself for a civil service in Hongkong. ''It is a formality - nothing more. We tried to have a civil service in Bali but there were too many forms to fill in,'' she said. Ms Deleage is planning to hold a reception in the territory once the couple returns after the wedding - ''we will be holding an open house,'' she promised.