Rihanna was forced to cancel her Houston concert due to an undisclosed illness after she’s already postponed two stops on her Diamonds World Tour since it started in early March.

Promoter Live Nation was once again left having to contact ticket holders and let them know that “as a result of illness” Rihanna would not be performing.

Instead of taking to Twitter as she has done in the past to beg forgiveness from her fans, it seems Rihanna, 25, has had other things on her mind.

As well as sending her condolences to all those involved in the Boston Marathon bombings, Rihanna also sent a Happy Birthday message to her brother Rajad.

The singer wrote: “Happy Birthday to the love of my life @RjFenty15.”

Rihanna was forced to cancel her Houston concert due to an undisclosed illness

According to Hollywood Life, Rihanna has been struck down with laryngitis once again, which is what led her to cancel the Boston stop of her tour too.

A source told the website: “She feels bad, but what can she do? This cold and laryngitis … just ain’t the business, but she will bounce back. She just laying it down, trying to get better.”

Rihanna’s health has been an issue throughout the tour and she has reportedly been told to curb her party-loving lifestyle if she wants to fulfill her touring commitments.

After bowing out of the Boston and Baltimore legs of her epic seven-month tour, Rihanna is said to be taking the advice of doctors, who expressed concerns about the effect her late nights, smoking and boozing could have on her overall health.

A source told The Sun newspaper: “Rihanna’s illness was so severe that doctors warned it could take months for her to fully recover – there were worries that she’d have to cancel her entire tour.

“They’ve told her that she needs to make some serious lifestyle changes, or risk this happening again. This has given her a scare. But Rihanna knows it’s partly self-inflicted.

“She loves to smoke, drink and stay up late. Her body was bound to need a break at some point. She’s now on a mission to start looking after herself.”

Meanwhile it has been confirmed that Rihanna is not the new face of Chanel, despite much online speculation.

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