Oh you people are just brillig. Thank you for your kind offers of help for a washed up hippy. MN is marvellous. I don't say that enough.
I think we've found a solution. By we I mean super BOF and her legendary cape/knickers over tights. She sent a couple of dresses over and one of them fits, covers up all hideous bits and matches a hat I already own. BOF herself will have to tell you whether it looks ridiculous, though she informs me she's ill so the picture I've sent her might have finished her off completely and she'll never recover, let alone post on MN again. Bagsy her cape frankly.
So, I have a purple dress and a purple hat. I will try and work out how to get the picture from my phone onto here.
I have some flat purple velvet thai slippers but they wouldn't be weather friendly for owt but brilliant sunshine I suspect.
So shoes and a wrap or jacket or something? To match purple.
And what do people do about things like hair? Do you go to a hairdressers on the day? This will be my only holiday/childfree day in 6.5yrs. I'm even going to wear my good knickers. Should a hairdresser attempt something?