6: Reported number of her and William's exes at the royal wedding:: Rupert Finch and Willem Marx for Kate, and Arabella Musgrave, Jecca Craig, Anna Sloan, and Olivia Hunt for William.
7: Number of times she has borrowed jewelry from the queen, including the Cartier Halo tiara she wore on her wedding day, the Nizam of Hyderabad diamond necklace for a charity function, and a gold shamrock brooch, which had belonged to the queen mother.