[Joelle.]

Katy Perry is releasing another single from the ‘Teenage Dream’ album, making it nine (NINE!) in total.

So far it looks like ‘Hummingbird Heartbeat’ will only be released in Australia, but who knows given the way this eight-decade campaign has gone so far.

Rihanna has released like 3 albums since she released California Gurls about 2 and a half years ago.

http://www.popjustice.com/thenews/ka...single/100424/