Céline Dion Makes Rare Public Appearance — Her First in 3½ Years — amid Stiff-Person Syndrome Diagnosis

The singer attended a hockey game in Las Vegas on Monday night

Céline Dion has stepped out publicly for the first time in nearly four years.

The legendary singer, 55, who revealed late last year she was diagnosed with stiff-person syndrome, attended an NHL hockey game on Monday night, per photos from the evening.

After enjoying the game at between the Vegas Golden Knights and the Montreal Canadiens at the T-Mobile Arena in Las Vegas, Céline stepped into the locker room to greet her hometown team in a white, quilted vest over a tan sweater.

Related: Why Céline Dion Really Canceled Her Shows: 'The Goal Is to Tour Again For Sure,' Says Source (Exclusive)

The "My Heart Will Go On" musician was spotted shaking hands with team members and posing for pictures with her son René-Charles, 22, and twins, Eddy and Nelson, 13.

The Canadiens' vice president of communications shared photos alongside Céline to Instagram with the singer's arm around her.

"We had a beautiful visit at the game in Vegas yesterday. Thanks @celinedion for your generosity. The whole team is so happy to have met you and your family," she wrote in French alongside the images.

Dion's condition — a rare and incurable neurological disease that can cause debilitating muscle spasms — affects the central nervous system, specifically the brain and spinal cord, according to the Stiff Person Syndrome Foundation. "Patients can be disabled, wheelchair-bound or bed-ridden, unable to work and care for themselves," they say, adding that the neurological disease with autoimmune features can include symptoms like "hyper-rigidity, debilitating pain, chronic anxiety," and muscle spasms "so violent they can dislocate joints and even break bones."

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Related: Céline Dion's Sister Says She's 'Strong' amid Stiff Person Syndrome Battle: 'Doing Everything to Recover'

In May, a source told PEOPLE that Dion, 55, was "doing everything she can" to be healthy enough to return to the stage after canceling her concert dates through April 2024.

“It’s heartbreaking that she has had to cancel touring but she is suffering mobility and other issues from the disease disrupting her daily life," an insider told PEOPLE.

“She is doing everything she can while working with doctors because she wants to perform,” they added. “She has not given up at all. She is hoping to get all of the issues with this disease under control so she can sing again."

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