Kate Middleton with Grey Gown by Issa Label. Many of the clothes from Kate Middleton that uses the brand of Issa. Issa is a favorite label of Kate Middleton. On the day of the announcement of the engagement to Prince William, Kate also wore a blue dress from Issa. In the photo below, she also wore a gown of gray Issa. It was a perfect style. This photo was taken on 2009.