Music
Rex Features
The singer told The Sun of her concerns over the group's stage show as she performs in arenas across the country in support of recent album Out Of Control.
Harding said: "Our pyrotechnics are great. I'm worried, though.
"I wear a wig for a lot of the show and if one of those sparks go astray I could go up like a Christmas tree."
Harding also admitted that some of the band's dance moves had left her exhausted during Friday's show at Manchester's MEN Arena.
She said: "I was really struggling for energy. I had to drop to the floor and make it look like part of the routine. I thought I might pass out."
> Click here for pictures of Girls Aloud in action on their 'Out Of Control' tour
Singles Reviews
Matt Cardle: 'Amazing' reviewCould Matt Cardle's stock finally be on the rise?
The Sound
Ones to watch: LawsonDigital Spy finds out more about the fast-rising group.
Music Interviews
StooShe interview: 'We're not a girl group'Digital Spy talks to Stooshe about the Spice Girls, All Saints and debut album.
Album Reviews
The Ting Tings: 'Sounds From Nowheresville' reviewThe duo overcomplicate matters on their second studio album.
