Singer Cheryl Cole, who is recovering from malaria, worried Starbucks staff with her "pale and thin" look when she popped in for a coffee.

The workers said she still appeared to be suffering the effects of her recent ailment.

"She seemed a bit vague and not fully with it," the Sun quoted a staff member as saying.

"She looked pale and thin.

"I didn't recognise her until she spoke in her Geordie accent.

"She took some food but said it was for her minder - although she looked like she could do with a bit of feeding up.

"Still, it was lovely to see her. Customers were really excited," another staff member said.

The X Factor star was rushed to hospital after collapsing on July 3. (ANI)