Stars including Beyonce, Eva Longoria and Jamie Lee Curtis have pledged funds to support families affected by the fires in Los Angeles - along with Paris Hilton, who is among those who have lost their homes.
The blazes which erupted in the Pacific Palisades and other areas of the county last week have destroyed thousands of properties and killed at least 24 people.
US reality star and businesswoman Hilton has launched an emergency fund to support families who have been displaced, and kickstarted it with a personal donation of $100,000 dollars (£82,000).
The 43-year-old, who watched her home in Malibu "burn to the ground" as the fires were covered on TV, has also been spending time with animal organisations. She announced on social media that she is fostering a dog whose owners lost their home.
"While I've lost my Malibu home, my thoughts are with the countless families who have lost so much more - their homes, cherished keepsakes, the communities they loved, and their sense of stability," Hilton said in a statement on social media.
Beyonce contributed $2.5m to a newly launched LA Fire Relief Fund, created by her charitable foundation, BeyGOOD.
"The fund is earmarked to aid families in the Altadena/Pasadena area who lost their homes, and to churches and community centres to address the immediate needs of those affected by the wildfires," the organisation said in a statement.
Beyonce's mother Tina Knowles lost her bungalow in Malibu in the fires.
"It was my favourite place, my sanctuary, my sacred happy place," she wrote on Instagram. "Now it is gone. God Bless all the brave men and women in our fire department who risked their lives in dangerous conditions."
Other celebrities who have donated funds include Desperate Housewives star Longoria and her foundation, the Screen Actors Guild, the Recording Academy, which runs the Grammys, and Oscar-winning actress Jamie Lee Curtis and her family - who have all pledged $1m (£819,000) each.
Prince Harry and Meghan are believed to have donated clothing, children's items and other essential supplies, and were seen making a surprise visit to hand out food to evacuees in Pasadena.
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Actors Mel Gibson, Miles Teller, Jeff Bridges, Billy Crystal, Jamie Chung and Bryan Greenberg are also among the Hollywood stars confirmed to have lost homes, along with talk show host Ricki Lake, and reality stars Spencer and Heidi Pratt.
The fires, which are burning around Los Angeles, come at the start of Hollywood's awards season.
Organisers of the Oscars have postponed the nominations announcement twice, with the shortlists currently set to be revealed on 23 January, and the event's annual luncheon ahead of the ceremony has been cancelled.
The show itself is still set to go ahead on 2 March. The Grammys, scheduled for 2 February, is also reportedly still set to go ahead.
(c) Sky News 2025: Paris Hilton, Beyonce and other stars donate and help out those affected by LA fires