Kelly invited her to his recording studio in Chicago, where his associates made a copy of her driving licence.
They also searched her suitcase and had her sign what she believed was a nondisclosure agreement.
She was taken to a locked bedroom, where she was kept for three days “without sustenance”.
After a member of Kelly’s entourage finally gave her something to eat and drink, she became dizzy and tired.
'DRUGGED AND RAPED' She woke up to find Kelly with her “in circumstances that made clear he had sexually assaulted her while she was unconscious”, prosecutors say.
Kelly has also been indicted by a federal grand jury in Chicago on 13 counts.
They include conspiracy to obstruct justice and producing child pornography, including four videos that included the girl whose family he is accused of paying.
Meanwhile, lawyer Michael Avenatti has claimed Kelly paid $2 million to stop the alleged victim in a 2008 child pornography trial giving evidence.
The case ended with his acquittal on all charges.
It has also emerged two of Kelly’s 'brainwashed' girlfriends are feared to have made a suicide pact following his arrest.
Jocelyn Savage and Azriel Clary are reported to be living with the R&B star at his apartment in Chicago, where he was arrested on Thursday while walking his dog.
Gerald Griggs, a lawyer acting on behalf of Savage's family, has now said his clients are concerned the two women may be planning to kill themselves if it becomes clear the singer is not coming back, reported.
The singer is accused of having engaged in sexual abuse and misconduct against numerous women and girls over the course of two decades – charges he denies.
Kelly was already facing several charges of aggravated sex.
The singer is facing multiple charges in both Chicago and New York Credit: AP:Associated Press We pay for your stories! Do you have a story for The Sun Online news team? Email us at tips@the-sun.co.uk or call 0207 782 4368. You can WhatsApp us on 07810 791 502. We pay for videos too. Click here to upload yours.