Chop chop!!
Gerrof yer allotment and get sorting.
I myself have decided on a Mabel Murple tweed skirt, a rather fetching twin set, thick granny tights and a pair of sensible brogues. Brown.
I will, of course, complete this ensemble with the family pearls.
I'm having my hair crimped especially for the occasion as I'd hate to be wearing this very stylish outfit and not look one's best in the hair department.