Britney Spears was "locked in hotel rooms" and sobbed she "wanted to be normal" during the "dangerous" height of her career, according to a close friend.
The 'Toxic' hitmaker, 41, was receiving death threats and would be banned from leaving her hotel during tours, according to her former make-up artist Julianne Kaye.
She was just 23-years-old when she took on the job of a lifetime, accompanying Britney on tours around the world from Europe to Asia.
