Rihanna: Kathy Griffin's 'S&M' Cover Is 'Perfection'!

Rihanna leaves her hotel wearing a flannel shirt and Levi’s 501 cut off shorts on Friday (July 22) in New York City.

The 23-year-old singer also sported the same Billionaire Boys Club cap she wore earlier in the week!

The night before, Ri rocked out at New Jersey’s Izod Center, where Jay-Z made a surprise appearance to perform “Run This Town” and “Umbrella” with her on stage.

Check out a video of Kathy Griffin singing Rihanna‘s hit, “S&M,” at a karaoke bar in Nashville, Tenn.

“Perfection!!!” Rihanna tweeted, along with a link to the YouTube clip.

20+ pictures inside of Rihanna leaving her hotel in NYC…