Watch Kacey Musgraves Perform ‘Yellow’ In Front of Prince Harry

Kacey Musgraves wowed the crowd at the the Royal Variety Performance in London, England, in November.

The Royal Variety Performance is a century-old tradition in the UK that benefits elderly entertainers. The Queen and Prince of Wales attend on alternate years and this year, it was Prince Harry's turn.

His Royal Highness was entertained by artists like Sir Elton John, One Direction, The Corrs, and Brandon Flowers of The Killers. There were also performances from Cirque Du Soleil and the cast of Mary Poppins.

Kacey Musgraves, the 27-year-old musician from Mineola, Texas, was the only country performer at the Royal Variety Performance this year. She did not disappoint.

The country singer covered Coldplay's 'Yellow' in a stunning performance.

Musgraves will finish the year with Willie Nelson in Austin, Texas, for ACL Live.