Rihanna Cancels Fourth Show In Dallas, Blames Illness

Rihanna has canceled yet another concert on her anticipated "Diamonds" tour.

According to Live Nation, the "Wait Your Turn" singer is still struggling with an "illness" and was simply unable to return to the stage in Dallas, TX Tuesday.

"Update: Unfortunately Rihanna is unable to perform this evening in Dallas due to illness. Please hold tickets pending a rescheduled show," Live Nation confirmed Tuesday night.

It's unclear what Rihanna may be going through, but she does have several upcoming shows, including a concert in Atlanta on Monday, April 22.

As previously reported, Rihanna canceled a show in Houston earlier this week. She also canceled shows in Boston and Baltimore earlier this year.