British Vogue details the Duchess of Cambridge 's style secrets in its February issue . The magazine also reveals that Kate is planning to wear a black dress for her upcoming visit with Prince William and his wife Catherine, who are expected to arrive at Buckingham Palace on March 29. The average number of teeth she exposes while smiling is 8.6 , according to British Vogue .
British Vogue details the Duchess of Cambridge 's style secrets in its February issue . The average diameter of Kate 's curls is 25 millimeters , magazine says . The average number of teeth she exposes while smiling is 8.6 , according to British Vogue .