The "One More Sleep" singer apologized to fans on Instagram, acknowledging the timing was particularly unfortunate.

She is currently undertaking a residency in Las Vegas.

An acclaimed singer is on the mend after falling ill, meaning she had to cancel her latest concert. In a note written late ...

The X Factor star, 40, was forced to cancel her December 20 show at Voltaire in Las Vegas just hours before she was due to ...

An iconic pop star has been forced to pull out of her performance with hours to spare as The X Factor's Leona Lewis made a ...