Article continues below advertisementKate Middleton spent years quietly earning the confidence of Britain's most tradition-bound institution, overcoming early skepticism to become one of the most trusted figures at the heart of the royal family.And OK! now has the inside story of how she achieved the seemingly impossible feat of winning over a royal family that initially viewed her as a "commoner."Kate, who married Prince William, 43, on April 29, 2011, had already known the future king for nearly a decade before becoming the Princess of Wales.