Who will design and create HM The Queen's ensemble for the upcoming wedding?

It shall be a thrilling moment when HM is first spotted on the wedding morn as she departs the Palace in her carriage on her way down the processional route to the Abbey. Who is designing and creating HM's ensemble for the day? Will she wear a special colour for the occasion and will she have special handbag and shoes made especially for the wedding day, or perhaps she and the mistress of the robes will choose her standard patent leather accessories? I'm sure her milliner is working diligently on her special hat for the day (is it Philip Treacy?). Do you think the hat will have a veil overlay as HM wore to HRH Princess Alexandra's wedding all those years ago? I'm so happy to be able to share my excitement and hear from others who share the same thrilling anticipation. If I were to be honoured to offer fashion cues to HM, I would advise her to wear tangerine with white accessories (she has always looked lovely in tangerine). A sheath with matching light coat, having three-quarter sleeves, would be my advice. This would allow for wearing elbow-length white gloves which would add such a touch of elegance. I would top it all with a broad-brimmed hat with tangerine flower accessory and veil overlay. And, of course, a brooch of HM The Queen Mother's collection to finish the ensemble. I will be so proud of our dear Queen that glorious day. Long may she reign o'er us.