"Firework" tops the Billboard Adult Contemporary chart
"Firework" ends the 16-week streak of Bruno Mars's debut single "Just The Way You Are", as it moves up 2-1, claiming the top spot on the Adult Contemporary chart. This is Katy Perry's first #1 on the chart. She previously had three Top 10 hits on this format: "Hot N Cold" (#9), "California Gurls" (#7), and "Teenage Dream" (#8).