A number of US stars including Chrissy Teigen, Paris Hilton and Chelsea Handler have evacuated their homes as wildfires rage across California.

Tens of thousands of people in the US have been ordered to evacuate their homes as the so-called Skirball Fire, which erupted early on Wednesday, continues to spread across Southern California.

It has already destroyed a number of homes and burned through over 100,000 acres near large estates in the exclusive Bel-Air neighbourhood of Los Angeles.

Firefighters are battling to save multi-million-dollar homes in the path of the flames, including an estate and winery owned by media mogul Rupert Murdoch.

Comedian Chelsea Handler wrote on Twitter: "Just evacuated my house. It's like Donald Trump is setting the world on fire. Literally and figuratively. Stay safe everyone. Dark times."

Heiress Paris Hilton wrote: "This wildfire in LA is terrifying! My house is now being evacuated to get all of my pets out of there safely.

"Thank you to all the firefighters who are risking their lives to save ours. You are true heroes!"

Singer Lana Del Ray tweeted that "ash is falling on my car".

Singer Lionel Richie helped his ex-wife flee her home. Brenda Harvey Richie, who is mother to Nicole Richie, thanked her ex on Twitter.

"Lionel Richie has been here helping me evacuate! Thank God for Lionel!", she wrote.

Model Chrissy Teigen also had to evacuate, writing: "Never thought I'd get to actually play what I thought was a hypothetical game of 'what would you grab?' if there were a fire.

"So far all I have is (daughter) Luna, some limited edition Oreos and my Spike TV award."

Former Glee star Lea Michele wrote: "Praying for everyone in LA... grabbed what I loved most this morning and so grateful to my friends for taking us in.."

She later told The Hollywood Reporter: "I had two minutes to think what I would take and I grabbed my cat and that's all because it really doesn't matter.

"All you need is to surround yourself with the people that you love."

Actress Gwyneth Paltrow wrote: "May God bless and protect our beautiful state and the men and women fighting these fires."

Singer Cher wrote: "Please pray for my home state, my birthplace, my beautiful California."

Actress Mandy Moore wrote: "Scary, scary times. Thank you to all the men and women on the front lines, risking their lives to protect people, pets and homes. Stay safe out there, folks!"

Kim Kardashian wrote: "I pray everyone in Los Angeles is safe from these fires and thank you to all of the fire fighters working so hard to keep everyone safe!"