Clarifying that she was meaning Kate, Ms Seward stated that the Americans also “adored” Diana.
They added that “no-one would replace” Diana, but they do “love” Kate.
She added: “They think she’s absolutely gorgeous and she’s a Princess.”
Royal fans in the US “love” the current Princess of Wales
The editor-in-chief added: “To them, Meghan isn’t a Princess.”
Diana died in August 1997, when her eldest son William was just 15.
Her tragic death, aged just 36, meant that she never got to meet both of her daughters-in-law.
Earlier this week, Kate paid tribute to the late Princess by wearing Diana’s “favourite” tiara at her first state banquet as the Princess of Wales.
Kate donned the Cambridge Lover’s Knot tiara as she joined William, and more than 160 guests, for a glamorous evening at Buckingham Palace in honour of the South African president.
The diamond and pearl-encrusted headpiece was given to Diana by the late Queen as a wedding gift in July 1981.
Kate and William are due to travel to the US at the start of December.
The source also revealed that the Prince and Princess of Wales are “hoping to boost their royal profile across the pond” with their visit to Boston for the Earthshot Prize Innovation Summit.
William and Kate first visited the United States in 2011, in one of the first tours they undertook as a married couple, travelling across California at the tail-end of a two-week tour to North America.
They returned in December 2014 for a three-day visit to the east coast, touching down in New York and meeting with then-President Barack Obama at the White House.
Source: EXPRESS CO UK