Katy Perry says she is disappointed her new single has leaked early.
The pop star was due to release her new single Roar later today, but it hit the internet over the weekend.
Despite the positive reviews the song has had, a tweet from Perry hinted that she was upset at the leak.
"HEY! I know how you guys can make me feel better about the leak...Get #HAPPYBIRTHDAYDAVID trending for my lil bro's 25th today!," she wrote.
Roar is the first single from her new album Prism, due for release on October 22.
