The Bajan singer is currently in the Northern city as part of her 'Diamonds' world tour and stopped by San Carlo for some dinner on Tuesday evening (11 June) with her friends and tour crew.
The restaurant is known for attracting some of Manchester's best footballers and their WAGS with its authentic Italian cuisine and has even boasted customers such as Mario Balotelli and Alex Gerrard in it's time.
However, RiRi is no doubt one of the biggest names to grace the eatery recently.
The chart-topping songstress dressed demurely and despite wearing a bright red leather skirt, she toned it down with a grey T-shirt and an oversized denim coat.
She completed her look with a statement red lip, a sole silver necklace, some diamond stud earrings and a pair of black Louboutin heels.
Rihanna, 25, also kept her hair simple for the outing by tying it up into a messy bun at the back of her head.
Joining her at the restaurant was of course best pal, Melissa Forde, who couldn't resist taking a few snaps of RiRi and the gang inside while they ate their food.
In one picture, Melissa can be seen wearing thick rimmed black glasses and tucking into a giant Margherita pizza, as Rihanna sits beside her.
Meanwhile, another photo shows RiRi looking a little unimpressed by her mouthful of food and pulling a face for the camera.
Last week, the 'We Found Love' star visited Paris for an unforgettable trip where she was granted access to iconic fashion designer, Coco Chanel's apartment and even had a private dress-up session with Balmain's head designer, Oliver Rousteing.
Once her thirst for fashion was well and truly quenched in the French capital, she then headed over to Cardiff to perform to thousands of her loyal fans and even admitted that seeing her supporters out in full force was still such an overwhelming feeling.
She tweeted on Monday: "#STADIUMKILLA I don't think I could ever get used to seeing this many people in one place, juuuussttt… "
What do you think of Rihanna's outfit for dinner? Let us know below!