Kate's tan court kitten heels have been ID'ed! They are by Bally.
Kate was seen wearing these as far back at 2008 so they are no longer available.
Kate's black solid draped silk wrap dress is now available on mytheresa.com for $675. Description from the website is as follows:
'Black draped wrap dress. Deep V-neckline with gathering detail at the waist. Short sleeves with slight gathering at the shoulder. Back seam detailing. Hidden zip at the side. 100% silk"