(FILE PHOTO) Kate Middleton And Diana Princess Of Wales

(FILE PHOTO) In this photo composite image a comparison has been made between, Left; SURREY, ENGLAND - DECEMBER 15: Kate Middleton, Prince William's girlfriend, with her mother Carole attend the Sovereign's Parade at Sandhurst Military Academy to watch Prince William passing out as a commissioned officer on December 15, 2006 in Surrey, England. (Photo by Pool/Tim Graham Picture Library/Getty Images) and Right; BIRMINGHAM, UNITED KINGDOM - FEBRUARY 29: The Prince And Princess Of Wales Arriving In Birmingham For An Official Visit (Photo by Tim Graham/Getty Images). Kate Middleton will be celebrating her 26th Birthday on January 9, 2008.