The Princess Royal is obviously concerned with more important things than her attire. So long as the clothes are appropriate for the occasion that is all she concerns herself with. IWS that I wish I could still fit into clothes I wore when I was 20 something!!
True that, she is still a size 8 or 9 since her twenties, no fluctuations ever. It's an amazing achievement by itself to stay at one weight through all of life's curve balls, maybe even menopause, I don't know if Anne is there yet, but if so it makes it more extraordinary she is still her perfect size-nine.
I think Peter won't get a title.. If he wanted a title and to take on the daily round of Court Circular engagements, I'm sure his grandmother would welcome it, but he has shown no inclination to be other than a private person, content with turning out for the large family gatherings. "Autumn Phillips" has a nice ring to it. I bet they are married in all but name already, living together, always together at the few occasions when they are photographed.
I can see them being married in three places and each one seems as likely as the others. What do you think?
1) St. George's Chapel, Windsor
2) Crathie Church, Balmoral (like Anne and Tim)
3) Perhaps a church near Gatcombe Park, maybe in Minchinhampton?
A forth possibility just occurs to me. Perhaps the venue will be associated with Autumn's family, maybe in Canada.