Which Teenage Dream single best defined Katy Perry's 2010-2011 pop reign?

Teenage Dream Pop Reign (2010-2011) poll options

Teenage Dream Pop Reign (2010-2011)

Katy Perry: Teenage Dream Album & Singles Reign (2010-2011)

Katy Perry

• California Gurls owned the summer
• Teenage Dream was the signature anthem
• Firework had the biggest cultural impact
• E.T. proved her reign had range