12. Rihanna - $53 million - Simone Joyner/Getty Images
In a press release issued Tuesday morning, officials at 1st Mariner Arena announced Rihanna's concert planned for tonight would be canceled.
Rihanna is reportedly still recovering from the flu and laryngitis.
The show is one of two canceled as a result of Rihanna's battle with the flu bug. Her appearance scheduled in Boston Monday night was also canceled.
Fans that purchased tickets for the Baltimore and Boston performances are being instructed to retain their tickets pending the rescheduling of the show.
Rihanna is expected to be on stage again Thursday for her show in Philadelphia.