Demi Moore Is Utterly Unrecognizable in New Photos From 'The Substance'

While celebrities are posting pics of their over-the-top Halloween costumes all over social media, Demi Moore didn't need a new disguise to get in the spooky spirit.

The 61-year-old actress took to Instagram on Thursday, Oct. 31, to share a series of behind-the-scenes photos from the filming of her horror movie The Substance—and fans loved getting a glimpse of the ghoulish prosthetics.

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In the first snap, Moore stared into the camera wearing a pair of glasses as the older version of her character in the film, Elisabeth Sparkle. The second shot showed the torso of the costume, featuring a surplus of saggy skin.

For a third image, Moore posed in a parking lot wearing the top half of her prosthetics over a pair of green athletic shorts while holding her little dog, Pilaf. In the final photo, Moore (as Elisabeth) was covered in fake blood.

"Spoiler alert 🚨 Been holding onto these gems from @trythesubstance and today feels like an appropriate day to share them. Happy Halloween from Elisabeth Sparkle 🧪THE SUBSTANCE is officially streaming today on @mubi!" Moore captioned her post.

Related: Fans Call Demi Moore ‘Blessed’ as She Stuns in ‘Unquestionably Sexy’ Glittery Dress

Moore's followers couldn't get enough of the gory pics.

"Pretty iconic if you ask me," wrote one fan.

"Hahaha you’re so epic 🙌😂," declared another person.

"You win! 🎃," commented someone else.

Yet another Instagram user wondered what Pilaf thought of her costume.

"😂did pilaf still know it was you!?" they wanted to know.

In The Substance, Elisabeth Sparkle is a TV fitness instructor who gets fired from her job because of her age—and then turns to a black market drug to create a younger version of herself (played by Margaret Qualley).

Next: Demi Moore's Comments About Aging Stir Up Heated Debate