Girls Aloud star Sarah Harding was left red-faced when she forgot the words to one of the band's songs while performing on stage in Scotland on Monday (11Mar13).

The five piece - Harding, Cheryl Cole, Nadine Coyle, Kimberley Walsh and Nicola Roberts - took to the stage at Glasgow's SECC Arena and were performing Life Got Cold when Harding began to stumble through the lyrics during her solo spot.

Luckily, bandmate Cole stepped in to sing the part instead after Harding sheepishly told the crowd, "I've forgotten the words."

The pop band ended its lengthy hiatus in February this year (13) to embark on a nationwide tour which ends in Ireland later this month (Mar13).