Sam Smith Praises Rihanna's Rock In Rio Show

Sam Smith hits the stage with a bit of scruff for his set during the 2015 Rock In Rio on Saturday night (September 26) in Rio de Janeiro, Brazil.

The 23-year-old “Writing’s On The Wall” singer hung out with actress Cara Delevingne at the festival where they both enjoyed Rihanna‘s performance.

PHOTOS: Check out the latest pics of Sam Smith

“Hands down the best pop show I have EVER seen. *On my knees and continuously bowing* @badgalriri,” Sam captioned on Instagram.

He added later with the image below, “When @badgalriri drops Shirley Bassey before ‘Diamonds’.”

25+ pics inside of Sam Smith…