The speculation had been almost frenzied – who would design the wedding dress of the century? Would it be Alice Temperley? Bruce Oldfield was a popular choice for a time, but then tailed off towards the end? Would Kate use Daniella Helayel of Issa, one of her favourite designers? There was a late surge for Sophie Cranston, but on Friday morning at 11.00a.m, the whole of the fashion world  shrieked with pleasure at the news that Kate Middleton had chosen Sarah Burton from the House of Alexander McQueen to design her  wedding dress. And what a beautiful dress it was! Kate Middleton looked truly regal as she walked down the…