Publicist Max Clifford allegedly told a teenage model he is accused of groping that he had sex with Diana Ross, a court has heard.
The woman, one of seven alleged victims of indecent assault by Clifford, told London's Southwark Crown Court that she was advised to go to see the PR guru in 1983, when she was about 17.
Clifford told her how important he was to the press, he made people's careers, and that he had had sex with Diana Ross, she said.
"For me, Diana Ross was a very beautiful, famous woman, I couldn't imagine why she would sleep with him," she said.
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Clifford told her that she needed to get some publicity, and it was very important she was seen with the right person.
The woman, who is now 48, said she was also told she could get a part in a James Bond film if she slept with producer
She said Clifford locked the door of his office and he kept saying how "turned on" he was as he carried out the alleged attack.
He said he wanted to see her figure and told her to take her dress off, which she did reluctantly, partly because she was wearing a thermal vest and holey tights, as she was "poverty stricken" and had only one pair.
"I hadn't gone there thinking 'I'm going to see a photographer', I thought I was going to get career advice."
She took her dress off and Clifford was "overcome", saying how turned on he was - "It was the tights, he was absolutely riveted about the tights."
He groped her chest area and arms - "At this point I'm feeling utterly stupid, totally in shock, I'm just not doing anything."
At that point the telephone rang, and it was his wife. He motioned to the teenager to sit down, and she put the dress back on.
He then started masturbating while on the phone to his wife, and, when the conversation was finished, came round the desk and tried to get the girl to take his penis in her mouth.
"I thought about biting him, but I didn't," she said. And she added: "I felt wet on what would be my breastbone area, the only uncovered part of me. I presume he ejaculated."
Clifford then told her he wanted her to come to dinner with him and his wife and Cubby Broccoli, and masturbate him under the table while he sat next to his wife.
"Then he went on to say I may need to sleep with Cubby Broccoli, but I would get a part in a Bond film.
"I loathe James Bond films."
She could not remember saying anything. "All I wanted to do was get out and go back to my room."
The woman said in her evidence that she thought Clifford was well-endowed and his penis was very large.
"I had only seen one before, I had never seen one in that proximity and that situation."
The court has heard claims that his penis is "tiny" and no more than two-and-a-half inches when erect.
When Richard Horwell QC, defending, asked her about the issue, the woman remarked: "I have a small mouth. I do, my dentist has always said..."
This prompted laughter on the jury, which was sent out for a few minutes.
Jurors returned to be told by judge Anthony Leonard QC: "It is inevitable in a case dealing with this sort of graphic detail that members of the jury want to burst out laughing."
Clifford, from Hersham in Surrey, is accused of 11 counts of indecent assault against seven women and girls. He denies all the charges.