A FRESH addition to the annals of "lies that Hollywood publicists tell on behalf of the rich and famous" was recently made by one Jason Weinberg, an influential Los Angeles talent rep whose clients includes such high-profile stars as Madonna, Demi Moore and Lindsay Lohan.
On September 26, Weinberg received an awkward inquiry from the Human Rights Foundation.
Was it true, they asked, that one of his clients, Hilary Swank, had accepted a large appearance fee to attend the 35th birthday party of Ramzan Kadyrov, the Kremlin-backed despot in charge of Chechnya?
Absolutely not, he replied, in a dismissive email which suggested it was impertinent to even wonder if an Oscar-winning Hollywood liberal of Ms Swank's stature would consider such a vulgar and unethical career opportunity.
"Hilary has no current plans to attend the party," the email read.
Fast forward exactly nine days, and, well, I think you can guess what happened. Dressed to the nines, Ms Swank sauntered up Mr Kadyrov's red carpet, before delivering a charming speech about how much she had already enjoyed her stay in Grozny.
"I could feel the spirit of the people, and I could see that everyone was so happy," she said. "Happy birthday, Mr President!"
Joining her was another vintage movie star: Jean-Claude Van Damme.
Although he blotted his copybook by referring repeatedly to "the country of Chechena" [sic] he got warm applause for finishing his speech with the pronouncement: "I love you Mr Kadyrov!"
Then, after hundreds of thousands of dollars-worth of fireworks had been fired into the night sky (while Kadyrov shouted "Allahu Akbar" three times), the British violinist Vanessa Mae, performed. She was paid a rumoured $500,000 (¤366,000).
Every good party is followed by a hangover, however.
And for all three celebrity guests, that arrived yesterday -- courtesy of a statement from the Human Rights Foundation, calling for their appearance fees to be reimbursed.
"Ramzan Kadyrov is linked to a litany of horrific human rights abuses," it read.
"It's inappropriate for stars to get paid to party with him. It bolsters his image and legitimises a brutal leader."
So far, neither Swank, nor Van Damme, nor Mae, have tried to answer that rather pertinent question.
Their representatives are apparently hoping that if they stay silent, the whole awkward affair will disappear.
Either way, the rumbling controversy represents the latest in a string of PR disasters which suggest that a golden era of celebrity endorsement may be slowly coming to a close.
For decades, the international A-list have been able to add to their wealth by agreeing to attend (or perform at) social occasions to which they have no obvious connection.
But traditionally, their more shameless exploits in this field have remained happily below the radar.
The onward march of technology puts paid to that happy state, though.
Mobile phone camera footage of Beyonce, 50 Cent, and Mariah Carey performing at parties hosted by the Gaddafi family caused an almighty row earlier this year.
With headline movie salaries already well down, and continuing to fall from their historic high in the mid 2000s, the likes of Van Damme and Swank may face tough decisions about how to finance their Hollywood lifestyles.
Do they abandon the lucrative world of celebrity appearances altogether? Do they ask managers like Weinberg to vet incoming bookings more thoroughly?
Or do they just behave like former England cricket captain Mike Gatting, who in 1990 realised the pointlessness of trying to hide dubious efforts to make money overseas, and instead chose to revel in his shamelessness.
"I don't know much about how apartheid works," he announced, after agreeing to a tour of South Africa.
"But one way to find out is by going there."