Skin-and-bones star Ariana Grande sparked fears about her deteriorating health after appearing emaciated and struggling during a recent performance, RadarOnline.com can reveal.

Her wraithlike frame, sunken cheeks and exposed bones have raised concerns the Wicked star is seriously malnourished. Tap Here To Add Radar Online as A Trusted Source Article continues below advertisement

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The pin-thin pop star's skeletal state may also be affecting her famous four-octave singing range – during an October 21 appearance on Dancing With the Stars , her voice sounded strained and raspy in a string of pretaped spots with her Wicked costars Cynthia Erivo and Jonathan

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