Rihanna: 'Diamonds World Tour' Launch!

Rihanna is red hot while showing off her flat tummy during the first night of her Diamonds World Tour at the First Niagra Center on Friday (March 8) in Buffalo, N.Y.

“No words, just DIAMONDS!!! #EPICshit #BUFFALO $old out,” the 25-year-old entertainer tweeted.

PHOTOS: Check out the latest pics of Rihanna

Ri‘s next tour stop will be in Boston at the TD Garden.

It was recently reported that Rihanna would be taking a year break after her tour ends.

15+ pictures inside of Rihanna performing on the first night of her Diamonds World Tour…