But when Dickinson turned from testifying about background information related to her character to the topic of the day - her allegation that Bill Cosby drugged and raped her in 1982 - her jocular manner shifted.
Confronted during cross examination about a particular passage, in which Dickinson recalled declining Cosby's advances and then "popping two Quaaludes and going to sleep" on her own, she said: 'It's all a fabrication there because I wanted the paycheck for my kids'. I remember feeling anger, disgust, humiliated.
Dickinson is the fourth "prior bad acts" witness to testify in Montgomery County court against Cosby, 80, in his trial on three charges of aggravated indecent assault. Prosecutors in his retrial were allowed to seek testimony from as many as five other women who claim Cosby also drugged and assaulted them.
Baker-Kinney is one of five additional accusers prosecutors are calling to the stand to show that Cosby had a history of drugging and molesting women.
Dickinson testified that her publishers advised her to leave the assault out for legal reasons, explaining, "You take poetic license in what you do".
Mesereau succeeded in getting Dickinson to admit that parts of her memoir are not true.
"I didn't fly to Tahoe to have sex with Mr Cosby", she testified.
She testified that he gave her a little blue pill, which she swallowed.
Another former model and aspiring actress, Lublin says she was 23 in 1989 when Cosby prodded her to drink two shots of alcohol in his Las Vegas hotel suite.
Dickinson then said the account in her biogaphy was false. Together, they spoke to Cosby, who, she said, admitted to giving her pills and penetrating her with his fingers, and using her hand to masturbate him.
Only once did she pause in her testimony, and that was just before she began to provide a graphic, detailed account of what she said happened at the Cosby home near Philadelphia in January 2004. Her full statement has Cosby "touching my stomach and genital area", while the NY piece says only "he was touching my stomach". As he tried to introduce himself before cross-examination, she looked at him from the stand, and icily exclaimed, "Good morning, Mr. Mesereau".
Dickinson, one of the country's most famous models in the 1970s and '80s, was the prosecution's second witness today, the fourth day of the retrial, and the fourth accuser to testify.
"See, here's the deal", she said, leaning forward to address the attorney to the stars.
Dickinson is one of the most high-profile women who have accused Cosby of sexual assault; 35 women previously shared stories with NY magazine in 2015.
The women say they do remember what happened but were scared about losing their job or hurting their career at the time. "A happily married man of five children, and I remember thinking how wrong it was".
Describing a scenario similar to three previous accusers, Dickinson said Cosby contacted her and offered career help.
"I wanted to hit him". "I absolutely never showed interest whatsoever. but I wasn't threatened, and I didn't judge him".
She faced off in a rapid-fire battle of wits with Cosby's flamboyant attorney, Thomas Mesereau, who is known for his near-shoulder-length, dazzlingly white hair. "And I was really confused".
Andrea Constand took the stand at his sexual assault retrial Friday.
Soon she felt "dizzy and woozy", she said.
Mesereau presented excerpts from Dickinson's three books in which she describes scenes in the 1970s and '80s where heavy drug use and promiscuous sex were common, including wild party scenes at the NY discotheque Studio 54. These promises, she says, went unkept.
This time, Cosby's defence team has taken a more aggressive stance towards Constand, describing her as a "con artist" who engaged in a consensual encounter and then concocted a story of assault so as to score a big payday.
"These girls proved that they have been right here to again up their sister - they acquired their sister's again", Cosby spokesman Andrew Wyatt mentioned outdoors courtroom Thursday. I couldn't move, I was motionless ... wondering what the heck is he doing ...