Rihanna Cancels Tour UPDATE [IMAGES]: RiRi 'Sick' for Diamonds World Tour Houston Dallas Cancelations, Fans Call OUT Pictures Of Songstress Partying

Rihanna canceled yet another stop on her Diamonds World Tour. Houston fans were disappointed Tuesday night, at the abrupt cancellation. But today, RiRi has a doctor's note, and rumors are swirling that she may cancel her apperance Wednesday night in Dallas. While RiRi maybe be sick, recent social media antics have, fans are debating on how "ill" RiRi really is. Read More »