The Princess of Wales paid a special tribute to the late Queen as she dazzled on the red carpet for tonight's Royal Variety Performance . Tonight's star-studded affair at the iconic Royal Albert Hall in London marks the first time Prince William and Kate have attended the event in two years, following the princess' shock cancer diagnosis. Showing exactly how 'black tie' events are done, Kate looked breathtaking in an emerald green, figure-hugging velvet gown. The floor-length dress had a