Singer Rihanna rushed to ER!
Rihanna was performing in Australia when halfway through her final song -- her smash hit Umbrella -- the songbird doubled over in apparent discomfort and alerted the crew that something was wrong.
Rihanna promptly left the stage.
Hopefully she only pulled a muscle!? After all, she did just soar onto stage via wires...
Umbrella duet partner Chris Brown finished the song and ended the show.
Rihanna is being treated at a local hospital. No word yet on what went wrong.