if you want a dress that looks like the one cathrine wore at the service of thanksgiving during the diamond jubilee, then i really recommend this dusty pink lace dress from the amy child collection at lipsy. it is £65.00 and the link it below, thanks xx
http://www.lipsy.co.uk/store/amy-childs-collection/amy-childs-lacey-pencil-dress/product-is-JD01860_041