Due to time constraints, Persin subcontracted the build of Monstro Eliasue’s suit to a U.K.-based company. “We had two full suits, one for a stunt double, and a half-built suit for Margaret, which she wore for closeups.” Persin and his team took care of all the effects, including the boob that squeezes out of one of Monstro’s many holes.

“The Substance” was lauded upon its premiere at the Cannes Film Festival earlier this year, where it was up for the Palme d’Or and won the best screenplay award. Earlier this month, it took home the Midnight Madness people’s choice award at the Toronto International Film Fest. “The Substance” is currently playing in theaters.

Who would ever want to turn Demi Moore into a monster? That’s precisely what director and writer Coralie Fargeat does in Moore’s latest film, The Substance, which is in theaters now. And as it happens,

Demi Moore has provided a glimpse into how she filmed intense, gory scenes for her new horror film ‘The Substance’

Demi Moore plays Elisabeth Sparkle in ‘The Substance,’ a satirical horror that focuses on the pressures of body standards.

The new body-horror movie "The Substance" is a wild time, It also took co-stars Demi Moore and Margaret Qualley way out of their comfort zones.

Demi Moore tells PEOPLE she hadn't met Margaret Qualley before becoming her costar in Coralie Fargeat’s new horror movie 'The Substance,' but had enough 'indirect connections' that they 'felt like we

She and costar Margaret Qualley also devoted time to perfecting sexualized gyrations their celebrity fitness characters would perform in front of leering cameras and a slimeball of a boss, played by Dennis Quaid,

Demi Moore, Margaret Qualley and Dennis Quaid attend the premiere of their upcoming film "The Substance," at the Directors Guild of America in Los Angeles on Monday. The film, which hits theaters on September 20,