LONDON, ENGLAND - DECEMBER 06: Catherine, Duchess of Cambridge arrives at Gary Barlow's concert in aid of The Prince's Trust at Royal Albert Hall on December 6, 2011 in London, England. (Photo by Mike Marsland/WireImage)
LONDON, ENGLAND - DECEMBER 06: Catherine, Duchess of Cambridge arrives at Gary Barlow's concert in aid of The Prince's Trust at Royal Albert Hall on December 6, 2011 in London, England. (Photo by Mike Marsland/WireImage)