The S&M singer, wearing sunglasses and showing off a long mane of red hair, ventured out late on Wednesday afternoon (March 2) to visit the city’s new multi-million dollar Westfield shopping centre.
There, the 23-year-old spent 90 minutes visiting several stores, including the upmarket lingerie shop, IM.
Fittingly for a megastar, she also checked out the range of Christian Louboutin shoes.
She didn’t make any comment about her recent Twitter war with fellow singer, Ciara, for which they have both apologised.
Shoppers gawped in shock as the star and her entourage sauntered around.
Scores took photos and video on their mobile phone as they chanted her name.
Afterwards she entertained friends at the city's exclusive Beppi's restaurant.
Rihanna arrived in Sydney on Monday on the latest leg of her Australian tour.
She plays two concerts in the city on Friday and Saturday. (March 4 and 5)