Girls Aloud singer Nadine Coyle is suffering from shingles, according to her bandmate Nicola Roberts.

The singer made the revelation after Coyle was forced to pull out of an interview with BBC Radio 1 DJ Jo Whiley.

Roberts explained her friend's absence by saying: "Nadine's not very well at the minute and she's got a horrible bug, she's got shingles. So we all wish her well."

Girls Aloud were appearing on the radio show in order to promote their new single 'The Promise'.