Another woman has accused comedian Bill Cosby of drugging her during a rendezvous in 1988, revealing it took her two days to recover from the encounter.

The woman, identified as Lisa, agreed to open up about her encounter with Cosby as part of the latest expose, which aired on U.S. Tv show Dr. Phil on Friday (19Dec14), but insisted she has no proof to suggest the embattled funnyman sexually assaulted her while she slept.

Lisa told Tv doctor Phil MCGraw that she was a 21-year-old aspiring model when she received an invite to meet Cosby, admitting she was "starstruck", adding, "I felt invincible. I couldn't believe that he wanted to see me."

She found the comic to be "respectful and kind" and he made her "feel very secure in seeing him again". She revealed she introduced her family to Cosby, and her mother trusted him " completely".

But the relationship turned sour following her visit to Cosby's hotel suite for a mentoring session.

Like many of the other 20-plus alleged victims, who have accused the comedian of drugging and sexually assaulting them, Lisa claims he forced her to have two drinks.

She told Dr. Phil, "I noticed myself getting a little dizzy. Bill had sat down on the edge of the couch. He said, 'Come over here and have a seat'. And he had his legs open and when I sat down, I was sitting down in between his legs with my back to his crotch. And he started to stroke my hair back.

"The last thing I remember is just feeling the strokes on my head. After that, I don't remember anything else."

Lisa claims she woke up at home two days later, with no memory of what had happened while she was unconscious.

Asked if she thought she had been raped, the latest Cosby accuser admitted she had no firm evidence.

Models Janice DICkinson and Beverly Johnson have also accused Cosby of drugging and attempting to sexually assault them.

Cosby has refused to address the accusations, but his lawyers insist they're all false.