Jocelyn Wildenstein’s partner, Lloyd Klein, detailed the 84-year-old’s “peaceful” final moments before her death.

On Wednesday, the fashion designer, 57, informed People that the late socialite, known as “Catwoman” due to her significant facial plastic surgery, passed away peacefully in her sleep on New Year’s Eve.

He shared with the outlet, “We had a lovely happy hour earlier that evening, preparing for the arrival of the new year. We decided to take a short nap to freshen up before getting ready.”

Recalling the events, Klein said, “While we were napping, I suddenly woke up and urged, ‘Jocelyn, we need to wake up and start getting ready,’ only to realize that she had unfortunately passed away and was cold to the touch.”

“It’s very sad. It’s extremely sad,” he continued. “It’s extremely sad to lay down with your other half that I know for 21 years and waiting to celebrate New Year’s Eve and to find her cold.”

Klein claimed to the outlet that Wildenstein’s cause of death on Tuesday was phlebitis, which WebMD describes as inflammation of a vein.

“Because of her phlebitis, the legs were very, very swollen, and the blood was blocked, and there was no oxygen in the brain,” he said.

Daily Mail reported (via AFP) on Wednesday that Wildenstein died of a pulmonary embolism while in a Parisian palace.

Klein opened up to People about his fiancée’s “perfect” health prior to her passing, gushing that “everything was good” between them.

The duo had just enjoyed a “beautiful” holiday season.

He and Wildenstein began their on-again, off-again relationship in 2003, with Klein getting down on one knee in 2017.

She was previously married to Alec N. Wildenstein, with whom she welcomed daughter Diane and son Alec Jr.

Jocelyn became a billionaire after her contentious divorce from Alec in 1999.

While the late art dealer once claimed to Variety that Jocelyn’s plastic surgery procedures started during their time together, she bizarrely insisted to The Sun in November 2024 that she hasn’t had any work done.

At the time, she claimed to have done Botox only twice and refrained from ever getting fillers.