Tim Graham / Getty Images; Rex USASIDE BY SIDEPrincess in the MakingPrince William’s girlfriend Kate Middleton may be a commoner, but her sense of style resembles Princess Diana’s, at times astonishingly so. VIEW OUR GALLERY.04.06.10 10:30 AM ETTim Graham / Getty Images; Rex USATim Graham / Getty Images; Rex USAPrince William’s girlfriend Kate Middleton may be a commoner, but her sense of style resembles Princess Diana’s, at times astonishingly so. VIEW OUR GALLERY. AP Photo; INFGoff.comRoyal BluesDiana attends a charity dinner at the Sydney Entertainment Centre in 1996; Kate Middleton in a BCBG gown at the Boodles Boxing Ball at The Royal Lancaster Hotel in London, June 2006. Jayne Fincher, Princess Diana Archive / Getty Images; Richard Gillard, Camera Press / RetnaA Feather in Their CapsPrincess Diana wearing a John Boyd hat and a tweed coat by Caroline Charles in November 1981; Kate Middleton at the wedding of Laura Parker-Bowles in June 2006Tim Graham, Picture Library / Getty ImagesChristmas RedDiana at Sandringham on Christmas Day 1993; Kate Middleton attends the Sovereign's Parade at Sandhurst Military Academy in December 2006.Tim Graham / Getty Images; Anwar Hussein, Allactiondigital.com / RetnaEquine Chic, Part OneDiana sports a British Lung Foundation sweatshirt and baseball cap at the Guards Polo Club in May 1988; Kate Middleton attends the Gatcombe Park Festival of British Eventing in August 2005.Tim Graham / Getty ImagesSnow PrincessesIn 1986, Diana went on holiday to Klosters, Switzerland. Nineteen years later, Kate Middleton joined the royal family in Klosters.Tim Graham / Getty ImagesAll the TrimmingsDiana attending Christmas services at Sandringham in 1994; Kate Middleton at the Cheltenham Races in March 2006.Tim Graham / Getty Images; Rex USAGirls in Their Summer DressesNineteen-year-old Diana attends the premiere of the 1981 James Bond film For Your Eyes Only in Leicester Square; Kate Middleton, 24, at a June 2006 Chakravarty Polo Match, in Surrey, England.Ken Goff, Time & Life Pictures / Getty Images; Mark Stewart, Camera Press / RetnaEquine Chic, Part TwoDiana, in 1981, at Sandover Park after Prince Charles fell off his horse during a steeplechase; Kate Middleton on the first day of the Cheltenham Races in March 2007.AP Photo; GoffINF.comDown to EarthDiana visits land-mine victims in Bosnia in August 1997; Kate Middleton in Chapel Row.Tim Graham / Getty Images; Alpha /LandovMood IndigoDiana, in a blue lace dress by Catherine Walker, at the 1997 London premiere of In Love and War; Kate Middleton, in August 2006, leaves London's Cuckoo Club.