Katy Perry still rules Billboard Hot 100 with gorgeous smash hits single 'Firework' with 2 weeks in a row stay on chart topper. While her successful album Teenage Dream gained 4 Grammy nominations early this month, including Album of The Year. Now, she had 4 number 1 hits for 'I Kissed A Girl', 'California Gurl's, 'Teenage Dream' & 'Firework' (3 songs in 1 album). Congratz katy cat! Firework's in the news!!