Nicole Kidman and Keith Urban have donated half a million dollars to the NSW Rural Fire Service.

Kidman took to Instagram today to announce the generous pledge.

"Our family's support, thoughts and prayers are with everyone affected by the fires all over Australia. We are donating $500,000 to the Rural Fire Services who are all doing and giving so much right now," she wrote.

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The bushfire tragedy has also attracted the attention of Pink, who pledged $500,000 yesterday.

"I am totally devastated watching what is happening in Australia right now with the horrific bushfires," the Walk Me Home singer Tweeted.

"I am pledging a donation of $500,000 directly to the local fire services that are battling so hard on the frontlines. My heart goes out to our friends and family in Oz."

Pink (Getty)

Australian comedian Celeste Barber has raised over $17 million to date for firefighters battling to save properties and people across New South Wales.

Barber – who is best known for her parodies of American celebrities – started the fundraiser online when her mother-in-law's house in Eden, on the New South Wales south coast, was engulfed in an orange glow.

"This is my mother in laws house," Barber captioned several photos on her social media platforms.

"It's terrifying. They are scared. They need your help."

Donations have poured in from all over the world including other celebrities like US comedian Gary Janetti and actress Selma Blair who commented, "I am so sorry".

American television journalist Katie Couric said: "So terrifying".