Rihanna: Personalized RiRi Pillowcases!

Rihanna goes for a walk with her BFF Melissa and some other pals on Monday (July 18) in New York City.

The night before, the 23-year-old singer performed at the Borgata Hotel Casino & Spa’s Event Center in New Jersey, where Cee Lo Green also treated the crowd to a few songs.

“My hotel has ‘RiRi’ stitched into my pillowcases, how f—in Raaaddd is that??! #rockstarshit #wheretheydodatat #IheartNYC,” Rihanna tweeted.

Last week, Ri, who’s the new face of Emporio Armani Underwear and Armani Jeans, enjoyed some downtime at a pool in Miami.

FYI: Ri is wearing Shayan Afshar bangles and a ring – she picked them up while shopping at the Dash boutique in Miami recently.

10+ pictures inside of Rihanna out with friends in NYC…