London, March 13: Rihanna, who kicked off her new Diamonds World Tour recently, cancelled her show because she is still suffering from laryngitis and flu.
The 25-year-old is said to be extremely disappointed that she has only been able to do just one show.
"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. I hate disappointing people that never ever let me down!! I'm so embarrassed about this! Thank you for your prayers and well wishes," Rihanna tweeted, reports contactmusic.com.
Doctors have suggested to Rihanna to work less and take more rest. Both of her shows in Baltimore and Boston are being rescheduled.
A source previously claimed that Rihanna couldn't wait to get out on tour and took it easy in rehearsals so she could save her energy for her fans.