Prince Andrew
Prince Andrew wounded Prince Charles' vanity because of his good looks. Pictured: Prince Andrew attends the Trooping The Colour ceremony on June 13, 2015 in London, England. Getty Images/Chris Jackson

Prince Andrew reportedly wounded Prince Charles’ vanity due to his “Robert Redford looks.”

In the book “Charles, Prince of Wales,” it was revealed by author Anthony Holden that a 30-year-old Prince Charles once got so upset with Prince Andrew.

“Prince Andrew’s dashing good looks began to steal some of Charles’ thunder, wounding his vanity and causing a few acid remarks. ‘Ah, the one with the Robert Redford looks?’ Charles would say when asked about Prince Andrew’s progress,” he said.

The author said that there was another instance wherein Prince Charles lost his temper and slapped his younger brother down for familiarity in front of outsiders. In 1978, the siblings were at a parachute training exercise when Prince Andrew teased Prince Charles about his age.

“You’re getting on a bit for this sort of thing, aren’t you?” he told the future King.

Matthew Kirkham, a journalist for Express, claimed that there has been jealousy between the siblings because Prince Andrew wasn’t happy with the fact that his older brother, and not him, will become the future King one day. Prince Charles is also the one that receives the most attention from the royal family and the media.

Prince Charles, on the other hand, believes that those who wish to participate in important family events should commit to full-time royalty. Prince Andrew and his two daughters, Princess Beatrice and Princess Eugenie, are not considered full-time or working royals.

As such, Prince Charles didn’t allow them to stand on the balcony of Buckingham Palace during Queen Elizabeth II’s diamond jubilee. Prince Andrew, in turn, took this move personally and expressed his concern that Prince Charles and his sons, Prince William and Prince Harry, overshadow his daughters with Sarah Ferguson.

In related news, Katie Nicholl, a royal correspondent, claimed that Prince Charles has always seen Prince Andrew as a liability to the monarchy.

“Charles wanted a slimmed-down, value for money monarchy, with no embarrassing hangers-on. This is Charles wanting to secure the longevity and the future of the House of Windsor,” she said (via Express).

But Prince Andrew thinks that when his parents die, he and his daughters should be given a greater role in the monarchy.