In the photograph posted on Instagram, the 25-year-old 'Diamond' singer is wearing a golden curly wig with a silk robe as she is reclining on a couch, reported Sun online.
She is also wearing dark sunglasses in the image taken by her best friend Melissa Forde.
With the picture, Rihanna tweeted, "Just a casual day at the office #photomoment (sic)."
Another monochromatic shot showed her lighting a cigarette while dressed in the same robe.
Earlier she was pictured posing topless in a pair of hot pants.