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The ex-girlfriend of Sammy Davis Jr. is the latest woman to come forward with sexual assault claims against Bill Cosby.

In an interview with the New York Daily News, Katherine McKee, who was Davis Jr.'s "road wife," says Cosby invited her to bring him barbecue in his hotel room one night in the '70s. "I remember I walked in the door, and he had a robe and cap on. He took the ribs from my hands and just grabbed me," she says. "He spun me around, pulled my panties down, and just took it. We were still standing at the door when he attacked me. It was so fast and so shocking and so unbelievable. ... To me, there was a different personality involved. He was a different man. It felt like a different person performing that act."

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McKee says she never said a word about what happened, not even to Davis. She says she decided to speak up now after more than 20 women have come forward with accusations against Cosby since November.

"I was mad at my own self for not saying, 'What the f---?' Why didn't I stop it and get him away from me? But it happened too fast. I was absolutely flabbergasted," she says. "And I had the guilt. I questioned myself, 'Why did I go there? Why did I bring him those ribs? Maybe he thought that's what I wanted too?'"

Watch her interview: