Robert Irwin has shared an update on his sister Bindi’s recent health scare.

The conservationist, 26, was rushed to hospital earlier this month with a ruptured appendix, just hours after touching down in Las Vegas for a gala honouring her late father Steve Irwin.

Taking to his social media, Robert, 21, said his big sister was well on the mend after undergoing emergency surgery.

‘Happy to see you on the up and up, Bindi,’ Robert posted on Instagram on Monday.

The I’m a Celebrity…Get Me Out of Here! host also added an affectionate tribute to his sister.

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Robert Irwin has shared an update on his sister Bindi’s recent health scare

Bindi, 26, was rushed to hospital earlier this month with a ruptured appendix, just hours after touching down in Las Vegas for a gala honouring her late father Steve Irwin

‘You face every hurdle head on, take it in your stride and inspire us,’ he gushed in praise of his sibling.

Robert included a photo of himself posing with Bindi in their trademark Australia Zoo uniforms.

Followers posted messages of support to Bindi on Robert’s post.

‘She’s so strong and an amazing role model for women!!’ wrote one fan.

Another follower commented: ‘I’m so happy that you’re doing okay! You’re such an Inspiration to girls/ women.’

‘Really glad to see you healing Bindi,’ added a third fan.

It comes after Robert told People magazine that soon after the emergency Bindi was recovering in the hospital with their mother Terri by her side.

‘She’s going to be okay, but surgery – out of all the things we were ready for, that was not one of them,’ Robert explained.

Taking to his social media, Robert, 21, indicated his big sister was well on the mend after undergoing emergency surgery

Bindi and Terri both missed the Steve Irwin charity event in Las Vegas earlier this month as a result of the health emergency. Pictured: Robert and sister Bindi with their mother Terri Irwin

Bindi and Terri both missed the Steve Irwin charity event as a result of the health emergency.

Robert explained that Bindi had been suffering some pain in the lead up to the gala but had tried to soldier on.

‘She’s going to be okay, but surgery – out of all the things we were ready for, that was not one of them,’ Robert explained.

‘She came to Las Vegas and was ready to put on a brave face. She said, “I’m just going to tough it out.”

‘But the surgeon told her, “Your appendix is going. It’s got to come out.”‘

Robert, meanwhile, was able to attend the gala on behalf of his family, with the annual event staged to raise money for their organisation Wildlife Warriors.

Funds raised from the gala support Wildlife Warriors, the conservation charity Steve and Terri founded in 2002.

Steve died in 2006 after being struck by a stingray while filming on the Great Barrier Reef.