United Kingdom, Feb. 9 -- Reba McEntire has been singing the US national anthem "in the shower" ahead of her Super Bowl performance.

The 68-year-old star is set to sing 'The Star-Spangled Banner' at Allegiant Stadium in Las Vegas on Sunday (11.02.24), and Reba has revealed how she's been preparing for her performance.

Reba - whose boyfriend, Rex Linn, is a "huge" football fan - told Apple Music: "I've been singing the National Anthem in the shower [and] when we get in the car."

Reba has been singing the national anthem at sporting events since she was a teenager. However, she's admitted that performing at the Super Bowl will be an extra special experience.

Reba said: "I get to sing a very special song for all Americans, people all aro...