Model Beverly Johnson says Cosby drugged her

The chorus of women's voices accusing Bill Cosby of drugging them as part of sexual assault just gained a powerful new voice.

Model Beverly Johnson has come forward claiming comedian Bill Cosby allegedly drugged her.

Beverly Johnson was the first black model to appear on the cover of Vogue.

She says in 1986 she was invited to rehearse for a part on the Cosby Show at Cosby's New York City home.

There, she says, he insisted on making her a cup of cappuccino.

Beverly says, "The second sip I knew I had been drugged..."

She says she then started cursing out the comedian.

At which point, she says, Cosby got angry and roughly dragged her out of his home and threw her in a cab.

Since last month, nearly 20 women have come forward claiming they were drugged and sexually assaulted by Cosby.