Prince Harry and Prince William reunited earlier this month to unveil a new statue of their mother Princess Diana in Kensington Palace.
As the royal fans remember Princess Diana on the day she tied the not with Princes Charles, the two brothers have decided not to issue an official statement to mark the occasion.
Prince Charles and Princess Diana tied the knot on July 29 1981 and today is their 40th wedding ceremony.
They divorced in 1996 a year before Diana died in a road accident in Paris in 1997.
In a sensational 1995 interview with journalist Martin Bashir, Diana had shocked the nation by admitting to an affair and sharing details of her marriage to the heir to the throne, Prince Charles.
It was the first time Diana had commented publicly about her doomed marriage.
Her remark that "there were three of us in this marriage, so it was a bit crowded" - a reference to Charles rekindling his relationship with Camilla Parker Bowles, now his second wife - was particularly damaging.
Prince Charles married Camilla Parker Bowles on 9 April 2005. Prince Harry's relations with his brother and father have worsened after he stepped down from his royal duties and settled in the United States with his wife Meghan Markle and children.