Diana in 1988; Kate leaving for Clarence House for the reception following her wedding in April 2011.
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Diana in Versace at a dinner at the Field Museum of Natural History in Chicago in June 1996; Kate celebrates National Canada Day in an Issa dress during the Royal Tour of North America in July 2011.
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Diana at Buckingham Palace in 1980; Kate wearing Alexander McQueen in Charlottetown, Canada, during the Royal Tour of North America in July 2011.
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Diana in Bruce Oldfield at the Grosvenor House Hotel in London in March 1985; Kate in Jenny Packham at the National Memorial Arboretum Appeal at St James's Palace in London in November 2011.
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Diana in Melbourne in October 1985; Kate in Jenny Packham at Royal Albert Hall in May 2012.
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Diana at the Royal Ascot in June 1986; Kate in Singapore during the Diamond Jubilee Tour in September 2012.
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Diana in a dress by the Emanuels at a dinner at the German Embassy in London in 1986; Kate at an official dinner hosted by Malaysia's head of state in Kuala Lumpur during the Diamond Jubilee Tour in September 2012.
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Diana in a coat by the Emanuels while touring Venice with Charles in 1985; Kate wears Alexander McQueen while visiting St. Andrew's School, her alma mater, in November 2012.
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Diana in Catherine Walker at Easter services in April 1987; Kate wears a Matthew Williamson coat while visiting Pembroke Refinery in Pembroke, Wales, in November 2014.
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Diana in Bruce Oldfield at an official dinner in Lisbon, Portugal, in February1987; Kate in Jenny Packham at the 600th Anniversary Dinner for St. Andrews in December 2014.
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Diana visits Westminster in June 1990; Kate visits the Stephen Lawrence Centre in London in March 2015.
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Diana and Charles announce their engagement in February 1981; Kate and William announce their engagement in November 2010.
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Diana attends her first public event with Prince Charles, at London's Goldsmith's Hall, in 1981; Kate at the Sun Military Awards in 2011.
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Diana at her wedding to Prince Charles in 1981; Kate at her wedding to Prince William in 2011.
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Diana on her first official visit to Wales, in 1981; Kate attends the wedding of Laura Parker Bowles and Harry Lopes in 2006.
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Diana and Charles present William on the day after his birth in 1982; Kate and William with Prince George on the day after his birth, 2013.
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Diana visits Alice Springs during the Royal Tour of Australia and New Zealand in 1983; Kate arrives at Calgary Airport for the Royal Tour of North America in 2011.
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Diana in Wanganui, New Zealand, during the Royal Tour of New Zealand in 1983; Kate gives her first public speech at East Anglia's Children's Hospices in 2012.
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Diana and Charles at Ayers Rock in Australia in 1983; Kate and William at Ayers Rock in 2014.
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Diana in a Jasper Conran suit in 1983; Kate at a St. Patrick's Day parade in 2014.
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Diana arrives at Birmingham Airport in Catherine Walker, 1984; Kate and Prince George arrive at Wellington Airport in New Zealand for the beginning of the Royal Tour of Australia and New Zealand, 2014.
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Diana carries a young Prince Harry off a plane at Aberdeen airport in Scotland in 1985; Kate, William and Prince George board their flight from Australia on the final day of the Royal Tour of Australia and New Zealand, 2014.
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Diana, in Victor Edelstein, awards a prize to Prince Charles' polo manager in 1987; Kate visits the Warner Bros. Studio Tour London in 2013.
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Diana wears Catherine Walker for a passing out parade in Surrey in 1987; Kate visits Bletchley Park wearing Alexander McQueen, 2014.
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Diana wears Catherine Walker to the Cannes Film Festival in 1987; Kate wears Marchesa to a BAFTA event in Los Angeles in 2011.
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Diana in Sandringham on Christmas Day 1993; Kate attends the Sovereign's Parade At The Royal Military Academy in Berkshire in 2006.
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Diana visits Shaukat Khanum Memorial Hospital in Pakistan in 1996; Kate visits Assyakirin Mosque in Malaysia in 2012.
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