Prince Harry and Meghan Markle made their final royal engagement as "senior" members of the Royal family on Monday.The Duke of Sussex, 35, and his 38 year old wife joined The Queen, Prince William and Kate Middleton at Westminster Abbey for the annual Commonwealth Day Service. Meghan looked stunning in an emerald Emilia Wickstead dress and cape for their last appearance as members of the Royal family, while Kate wore a red recycled Catherine Walker coat.