Prince Harry was once confused for his brother, Prince William after a celebrity mistakenly tagged the heir to the throne instead of the duke following a charity event in Santa Barbara.

The Duke of Sussex attended One805Live! concert hosted by Kevin Costner in Carpinteria back in September to help raise funds for the local community’s first responders.

During his speech on stage, Harry paid tribute to helicopter pilot Loren Courtney, saying: “As you’ve probably heard already, 22 years [of] military service over 10,000 hours and rarely sees his family because he’s always here flying helicopters.”

Also on stage to perform was singer Richard Marx who was greeted by the duke backstage.

Their exchange was uploaded on Instagram as a story by Marx’s wife, Daisy Fuentes, who “mistakenly tagged” the Prince and Princess of Wales’s Instagram account (@princeandprincessofwales), according to Us Weekly.

Harry could be seen saying “well done” to the singer before they shook hands.

The Instagram story has since expired but Ms Fuentes uploaded another one with the tag @princeharryofengland.

Harry no longer has any accounts on social media, while his official Instagram account with Meghan Markle from their time as working royals (@sussexroyal) has not been active since their departure from the Firm in March 2020.

Neither Richard Marx nor his wife commented on the blunder.

During his speech at the event, Harry said to Loren Courtney: “There are people here tonight who are alive because of you and who are back to their families because of you. From everybody here, thank you so much.”

Other celebrities at the event included Pink, Cameron Diaz, Zoe Saldana and Rob Lowe

The Duke’s wife, Meghan Markle, reportedly did not attend due to illness.