Her third album titled `` Teenage Dream '' was released in August 2010 and included the singles , `` California Gurls '' , `` Teenage Dream '' and `` Firework '' . Her sophomore studio album Teenage Dream was released in August 2010 and debuted at number one on the Billboard 200 . The album included hit singles `` California Gurls '' , `` Teenage Dream '' , `` Firework '' and `` E.T. '' , all of which topped the charts on the Billboard Hot 100 , making the Teenage Dream album one of only nine albums to ever produce four or more Hot 100 number ones .