The teenager is now backing a campaign to 'target internet trolls' as its revealed that one in 13 teenagers has been bullied online.
In an interview with The Sun today, Cher said: "It's a miracle I'm still alive — I've been driven to hell and back."
She went on to explain: "It really frustrates me when people say, 'Just ignore it'. How am I meant to ignore it? I'm a teenage girl.
"I'm going to be drawn to that comment more than I am to one saying I'm beautiful or a great singer. Just like every other teenage girl would be. I put on a complete guard in front of me after that."
Cher added: "I didn't want to talk to anyone, I wanted people to leave me alone."