Bindi Irwin celebrates Olivia Newton-John's birthday

Aletha Wilkinson

They're both Australian icons, beloved for their kindness and generosity of spirit – one works hard to raise awareness and funds for cancer research, the other is passionate about animal welfare.

So it's no surprise to see Bindi Irwin wishing fellow celebrity Olivia Newton-John a happy 69th birthday.

Bindi posted a throwback pic of herself and Olivia with her boyfriend, Chandler Powell, accompanied by some heartfelt words.

It's not the first time Bindi's shown support for Olivia, with the 19-year-old attending her Cancer Wellness & Research Centre Gala in Melbourne in September.

Bindi changed out of her usual khakis for Olivia's fundraiser gala last month. Source: Getty

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Bindi posted this pic to instagram earlier in September, showing off her usual down-to-earth style. Source: Getty

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