Foster was on stage as this year's winner of the Cecil B DeMille Lifetime Achievement Award, which had been announced previously.
But her acceptance speech was anything but predictable as the veteran actress seized control of what is every year a noisy, boozy ballroom; the crowd of A-listers quickly quieted down as it became apparent that she had something serious and important to say.
The 50-year-old Oscar-winner, who has been protective of her private life and reluctant to discuss her sexual orientation, was coy at first, suggesting she had a big announcement that would make her publicist nervous.
Then she stated: "I'm just going to put it out there, loud and proud ... I am, uh, single," pausing for dramatic effect before that last word. "I hope you're not disappointed that there won't be a big coming-out speech tonight. I already did my coming-out about a thousand years ago."