In the picture, added to photo-sharing website Instagram, the 24-year-old singer is seen on top of her bodyguard's shoulder and appears to cut up an unidentified substance on the top of his shaved head.
The image has caused outrage among web users and her fans, attracting more than 1,000 comments, with some speculating the mystery substance was cocaine, reports contactmusic.com.
One fan wrote: "Yep take coke! U gonna die," while another added, "Chick looks like a druggie".
"I love her music, not her lifestyle. Hope she gets this under control before we have her funeral on TV like Whitney Houston," wrote another fan.
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