Rihanna 'Embarrassed' About Canceling Boston Show Due To Laryngitis

Gig was the second date on her just-launched U.S. tour

Rihanna's Diamonds World Tour
 got off to a shaky start over the weekend. After a kickoff on Friday night in Buffalo, New York at the First Niagara Center, Rih was forced to put off her Sunday night show at the TD Garden in Boston, Massachusetts due to illness.

Tour promoter Live Nation released a statement announcing the cancellation, saying, "Unfortunately, following her sold out concert on Friday, Rihanna has contracted laryngitis and per doctor's instruction is unable to perform this evening."

Rihanna was bummed about the gig as well, tweeting on Sunday morning, "#Boston this is the hardest thing for me to deal with! I feel like we've been waiting on this day forever, and I'm hurt that I let you down."

She followed a short time later with the note, "I hate disappointing people that never ever let me down!! I'm so embarrassed about this! Thank you for your prayers and well wishes!"

The next scheduled date on the tour is on Tuesday at the 1st Mariner Arena in Baltimore, Maryland. The six month Diamonds tour is slated to run through May in the U.S. before heading to Europe for a series of gig that will wind down with a show in Helsinki, Finland, on July 28.

According to a review of the Buffalo show in the Buffalo News, the singer appeared in fine form on opening night. Though reportedly an hour late to take to the stage, the sold out show featured impressive choreography from the singer, her eight dancers, two back-up singers and four-piece band.

The night's two-hour barrage of hits included "Birthday Cake," "Umbrella," "What's My Name," "Love the Way You Lie" "Rude Boy," "We Found Love" and "Diamonds," amid a barrage of costume changes.

A spokesperson for Rihanna could not be reached at press time for further details on the singer's illness and confirmation that Tuesday's Baltimore show will go on as scheduled.