By Hanna Rantala

LONDON (Reuters) - British singer-songwriter Lily Allen has performed in front of tens of thousands but she says taking the stage in London's West End is "much scarier".

Allen, who rose to fame in the late-2000s with hits such as "Smile" and "Not Fair", is making her theatre debut in "2:22 - A Ghost Story", a supernatural thriller which opened for previews at the Noel Coward Theatre on Aug. 3.