Lily Allen has revealed the secret behind her floods of tears on stage last month. The singer had a mystery back injury when she performed in Helsinki and sobbed between songs as she fought through the agony.

In tears: Lily Allen on stage in Helsinki

But now Lily has revealed the full story of her ordeal: she fell out of a DJ booth and landed on her tailbone.

She said: “I was in Scandinavia playing these festivals and I met up with these guys called Scream and Benga, and another guy. They were DJing and I didn't really want to like steal their limelight and stuff, so I was sort of crouching behind the decks, and I sort of fell off the back of their stage, about three feet onto my coccyx.

“It really was the most painful thing ever. It was really horrible, because I had one of my security guys with me, and he said he turned around and just saw these two feet sticking out of the floor, in the air.

“You know when you fall over your kind of natural reaction is to get straight back up again? But I was in so much pain I thought I was paralysed or something. I mean, I really thought that I was going to have to have my legs cut off.”

Luckily, it didn't come to that. But Lil had to soldier on through her show while on painkillers. But that didn't quite go to plan either.

She told Absolute Radio's Geoff Lloyd: “They basically gave me what I can describe as like an epidural, I think, and yes, it kind of numbed from my knees to my lower back to get through this gig. But then half way through the gig the thing started running out and I just burst into tears on stage. It was so horrible, I was sobbing real toddler tears.”

What a trouper. The things these popstars have to go through for their fans.