Britney Spears’ fans are voicing concerns for the pop star after she shared a bizarre dancing video on social media.

Spears on Wednesday took to Instagram to share a one-minute long video dancing to “Holy Grail,” a song from her ex-boyfriend Justin Timberlake and Jay-Z. Her heavy eye makeup was visible in the video and she wore a black turtleneck crop top and plaid shorts.

The “Toxic” singer does not speak in the video, but she can be seen mouthing some of the lyrics as she spins around in her living room. She even gave her ex a shout-out in her caption, writing, “Danced in my black 🐢 neck last week to HOLY GRAIL !!!!I KNOW … turtle necks are SO ME 😂💁🏼‍♀️✨💃🏼 !!!! @justintimberlake”

The video racked up more than 1.1 million likes on Instagram as of Thursday morning, but it also garnered a lot of attention from Spears’ fans who shared their concerns in the comments section.