Organizers expect Matt Damon, Leonardo DiCaprio, Jennifer Lawrence, Charlotte Rampling and Sylvester Stallone to be there.
It's the annual nominees luncheon at the Beverly Hilton Hotel today.
A group of protesters unhappy with a second year of all-white acting Oscar nominations also will be there. Or, at least, they'll be outside. They will be encouraging an Oscars boycott over the lack of minority nominees.
Well-regarded performances by Idris Elba, Samuel L. Jackson and Will Smith were shut out of the acting nods.
Project Islamic Hope and other civil rights and religious groups will "protest the Oscars' nominees luncheon in support of the Oscars boycott," the organization said in a statement.
"We're not just asking African-American talent not to attend the Oscars, we're asking the entire industry to support the boycott and show their solidarity in support of diversity," Najee Ali, director of Project Islamic Hope, said.
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The boycott has been endorsed by Rev. Al Sharpton. Some Hollywood luminaries — among them Jada Pinkett Smith and Spike Lee — have said they're staying home, too.
In response, the academy announced sweeping reforms, including a phasing out of lifetime voting membership for a group reported to be 93 percent white.
"Our coalition is asking that white Hollywood take a stand against racism and support the boycott as well," Ali said.
The group, which will be at the hotel at 10 a.m., is asking supporters to wear black armbands.