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 swirliing 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.

The "Stay" singer addressed her concert cancelation via a fan account in a signature "Rihplie." She said "she was sick since San Diego, but thought she could keep going on."

The pop star, has been working nonstop for almost a decade, with a recent record of seven albums in seven years. She was spotted back in Beverly Hills, dressed casually leaving as she worked out a doctor's office.

We reported Tuesday that Rihanna was partying all weekend in Vegas, apparently for bestie and sister/friend Melissa Forde's birthday. Rihanna posted a pic partying on her tour bus, just days before the Houston cancelation.

Fans are not pleased with Rihanna's behavior. While the songstress is reporting that she is ill, she continues to post pictures of herself smoking and partying.

Ppl out here buying tickets 2 see Rihanna and she canceling tour dates because she is sick,meanwhile posting pics of her partying on ig! Smh

— Jennifer Joseph (@JenniferJtweets) April 17, 2013

Rihanna suppose to be sick but yet she post pics on Instagram partying and hanging with Chris brown .. Somebody's lying — angel Hicks (@muddas15) April 17, 2013

Rihanna was sick in Vegas yet she was partying...

— ZaynEkko (@ZaynDiamonds) April 17, 2013

How is Rihanna sick? There are pictures of her every single day out partying getting high and wasted. She just has a really bad hangover. — Johanna Arce (@johobanana) April 16, 2013

Rihanna was just partying a few days ago now she's sick smh she playing all you Rihanna fans smh Beyonce would NEVER

— Tyneika✌❤ (@YoursTruely_Ty) April 16, 2013

RiRi will be making up for the cancelations at a later date, with concerts in Houston, Boston, and Baltimore.