Celine Dion’s latest post has fans concerned for the star’s health.

The 51-year-old singer’s team took to Instagram to share a photo of the chanteuse taking a time-out in a black leather miniskirt, prompting red flags over the star’s noticeably slim frame.

“F.O.M.O,” the caption read. “It means Fear of Missing Out, or does it?”

The playful snap, posted just days before Dion wrapped her Las Vegas residency, set off a firestorm of criticism over the My Heart Will Go On singer’s weight.

“I love you Celine. Please take care,” one fan wrote. “You look very unhealthy.”

“I’ve never seen her look this skinny,” another said of the photo.

While many defended the star saying Dion has always been thin, others theorised that there could be another reason behind her altered appearance.

“I know Celine has always been a thin gal, but today she is too thin,” a fan concluded.

Despite the attention given to her body, the singer has been adamant that there is no cause for concern.

“It’s true that I’m a little thinner,” Dion told reporters in April of this year. “Everything’s fine, nothing’s wrong.”

The L’Oreal Paris ambassador attributes her recent weight loss to her newfound love of ballet.

“Dancing has been in my DNA all of my life,” she previously told PEOPLE.

“It’s a dream. And so hard! I do this four times a week. People say, ‘She’s a lot thinner’ but I’m working hard. I like to move and [weight loss] comes with it.”