Prepare your big red car and hot potatoes - Australian children's entertainment icons The Wiggles have joined the growing number of celebrities raising funds for bushfire relief.

The group announced on Monday that it would perform a one-off over 18s concert with its original members - Greg Page, Murray Cook, Anthony Field and Jeff Fatt - with proceeds going toward the Australian Red Cross and wildlife organisation WIRES.

Watch more in the video above

It will be the first time the band has played together since 2012, when Lachlan Gillespie, Simon Pryce, and Emma Watkins took over from Greg, Jeff and Murray.

"Emma wrote to us and said 'we should do something'," Anthony Field told 7NEWS.

"And then Luke, our tour manager, said 'why don't we get the original Wiggles together - and it's very hard to do that...all the stars aligned and we're doing it."

The Wiggles original line up (from left) Greg Page, Anthony Field, Jeff Fatt and Murray Cook will play a two fundraising shows. Credit: TONY PHILLIPS / AAPIMAGE

The band will play at the Castle Hill RSL in New South Wales on January 17 and 18.

Tickets to the original and a second show sold out in five minutes.

"We didn't know how big (it would be) or if anyone would turn up," Field said.

But the band is hoping they can do a national fundraising tour at some point.

"We'd love to go to all the cities and raise money," Field said.

The Wiggles have announced a one-off reunion for bushfire relief. Credit: The Wiggles

Celebrities in Australia and around the globe have joined fundraising efforts, with more than $30 million pledged to the NSW RFS through comedian Celeste Barber's Facebook fundraiser.

American pop superstar Pink has donated half-a-million dollars and encouraged her 32 million Twitter followers to dig deep.

Nicole Kidman and Keith Urban matched the pledge, as did billionaire business mogul Justin Hemmes.

Your cookie settings are preventing this third party content from displaying. If you’d like to view this content, please adjust your Cookie Settings . To find out more about how we use cookies, please see our Cookie Guide.

Ellen DeGeneres tweeted her 79 million followers, saying she's donated to three organisations.

Singer Selena Gomez, Kim Kardashian and Kendall Jenner have also issued messages of support.

More on 7NEWS.com.au

America's newest music superstar Lizzo - in Australia for FOMO Festival - encouraged her fans to get involved.

Magda Szubanski has teamed up with "Egg Boy" Will Connolly, starting a GoFundMe for people mentally affected by the bushfires.

In the sports world, tennis star Ash Barty pledged her Brisbane International prize money while our Aussie bowlers offered $1,000 per wicket in their clash with New Zealand.

Australian cricket great Shane Warne is putting his beloved baggy green cap up for auction to raise vital funds for victims of the bushfire crisis, while actress Margot Robbie made a tearful plea for donations on her Instagram.

Click here to find out how you can help those affected by the crisis

Watch 'The Latest on Facebook Watch' here.