The Duchess of Cornwall is not so popular abroad, especially in the United States, and has the 'ghost of Diana' hanging over her, a royal expert has claimed.
Camilla has had a surge in popularity in the UK in recent years after championing several hard-hitting causes.
Years earlier, public opinion had not been as favourable after she had been thrust into the spotlight after it was revealed she had been having an affair with Prince Charles during his marriage to Princess Diana.
But despite seemingly winning over most of the UK people, royal expert Ingrid Seward believes that Camilla still has some work to do to increase her popularity around the world.
Ingrid, editor in chief of Majesty Magazine, told True Royalty TV's The Royal Beat: "I think people that have met Camilla really love her, and can see the warmth that she has.
"But globally she’s not so popular, especially in the United States, because of this huge swell for Diana that will never go away.
"So I feel that Camilla and Charles have always got the ghost of Diana hovering over them.”
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However, she added: "I don’t think the world wants another glamorous Diana on the throne, I think after the Queen goes, to have someone steady and charming but slightly in the background like Camilla is probably a very good thing.”
Last month, Camilla received a ringing endorsement from the Queen, who released a statement on the eve of her Platinum Jubilee saying it was her "sincere wish" for Camilla to be Queen Consort.
When Camilla wed Charles in 2005, a statement said she intended to use the title Princess Consort, rather than Queen Consort, when her husband becomes King.
But the monarch said: "I remain eternally grateful for, and humbled by, the loyalty and affection that you continue to give me.
"And when, in the fullness of time, my son Charles becomes King, I know you will give him and his wife Camilla the same support that you have given me; and it is my sincere wish that, when that time comes, Camilla will be known as Queen Consort as she continues her own loyal service."
In reply, Charles released a statement the next day paying tribute to his "inspiring mother" and admitting he's "deeply conscious" of her wish for Camilla to become his Queen Consort when he takes the throne.
And in a later interview, Camilla said it will be a "great honour" to become Queen Consort and believes the position will help her to further highlight the causes she supports.
The Royal Beat - available on True Royalty TV.