Read this: The city has a particular connection to Cunard Line and their fleet of ships. This was particularly evident on 11 November 2008 when the Cunard liner RMS Queen Elizabeth 2 departed the city for the final time amid a spectacular fireworks display after a full day of celebrations. Cunard ships are regularly launched in the city, for example Queen Victoria was named by HRH The Duchess of Cornwall in December 2007, and the Queen named Queen Elizabeth in the city during October 2011. The Duchess of Cambridge performed the naming ceremony of Royal Princess on 13 June 2013.
Now answer this question, if there is an answer (If it cannot be answered, return "unanswerable"): Who christened the Cunard ship Queen Victoria in December 2007?
HRH The Duchess of Cornwall