Accidental Superstar

If I''d known that two million people were going to be watching, I''d probably have done a bit of tidying up.

Katie Cox is used to going unnoticed - by her mum, her dad, even her best friend. But when a video of her singing in her bedroom goes viral, she becomes a superstar overnight. As the views skyrocket and a recording contract beckons, the real world starts to feel very far away.

And now Katie'...