Kate wore many designers in her 12 and a bit months (some she had several pieces by and/or bespoke pieces): Alexander McQueen, Alice Temperley, Amanda Wakely, Catherine Walker, Erdem, Jenny Packham, Matthew Williamson, Roksanda Ilincic, Smythe and Roland Mouret.
I like her in Roland Mouret - she wore the cream bespoke number to Claridges (with Jimmy Choo shoes) and the navy dress (with a Smythe blazer, Manalo Blahnik shoes and a Mulberry bag) to board the plane for the Canada tour.