The Block star Jess Eva accidentally posts nude video to Instagram.

 She’s known for baring it all on air – but the phrase took on new meaning for Jess Eva during a recent Studio 10 appearance.

On Sunday, the Block star and radio presenter posted a behind-the-scenes video to show her Instagram fans all the work that goes into a TV appearance.

The short clip featured Eva getting her hair and makeup done, before stepping out of shot to strip down and get changed – without realising there was a mirror behind her.

The video featured a brief clip of Eva’s bare bottom. Picture: Instagram.

She evidently didn’t realise there was a mirror behind her. Picture: Instagram

She later edited her caption to include a funny dig at herself for the mistake.

“Updated warning!” she wrote to her 116,000 followers.

“I’m so sorry I forgot there were mirrors in the dressing rooms that you could see! #bumcrackwarning.”

The rest of the footage was much more tame. Picture: Instagram

It was filmed ahead of her Studio 10 appearance on the weekend. Picture: Instagram

Eva added: “The ENTIRE journey that is the before and after for [Studio 10]. And the artistry of the team that it takes to allow you to sit on the couch.”

Eva is a popular TV and radio personality. Picture: Instagram

The accidentally X-rated post went down a storm with fans, who weighed in with their own puns.

“Hahaha! You crack me up,” one teased.

“Oh Jess, you ‘crack us up,” another wrote.

Others praised her for owning the gaffe.

“Good on ya, girlfriend!” a fan said, while another gushed: “OMG, you’re the best! Gotta love ya.”

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