Vegemite has remade its famous advertisement, featuring one of the original stars, in the lead-up to celebrating 100 years.

Everyone knows the “Happy Little Vegemite” jingle, which came about in the 1950s.

To mark 100 years of the beloved spread, Vegemite decided to reimagine the ad.

Earlier this year, it put out a casting call for Australian children to feature in the 21st century version of the famous commercial.

More than 10,000 children from across Australia auditioned to be part of history and now, the new “Happy Little Vegemite” ad is here.

Using footage from the original ad and new footage of Australian children today, the ad is just as infectious as it was decades ago, with smiling children enjoying Vegemite, dancing and sitting at the table with someone very special.

Its stars include Trish Cavanagh, who marched on top of the giant spread jar in the original 1950s ad when she was just seven.

Now 71, 64 years later, she appears as a special guest in the remake. At the very end, Ms Cavanagh is seen sitting at the table with the next generation of Vegemite kids.

“I’m so honoured Vegemite asked me to be involved in the ad that changed my life forever,” Ms Cavanagh said, according to Campaign Brief.

“Vegemite has been and continues to play a huge role in my life, and I am so thrilled to be passing the baton to the next generation of Happy Little Vegemite kids.”

‘Happy Little Vegemite’ history

The famous Vegemite jingle was first heard on the radio in 1954, sung by a trio of “bright, energetic youngsters”, the company said.

In 1956 the song was turned into a TV campaign that aired until the late 1960s.

The original commercial was remastered and colourised in the 1980s for a whole new generation to enjoy and for older generations to “revel” in nostalgia. The ad was then released again in 2010.

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Everyone involved in the ad was incredibly excited to be part of Australian history.

“Vegemite has played a key role in this great nation since 1923, and we couldn’t think of a better way to celebrate its incredible legacy than by inviting a new generation of Happy Little Vegemites to be a part of something incredibly special,” Bega Foods general manager marketing Matt Gray said.