'Firework' is No. 1 on U.S. record chart

LOS ANGELES, Dec. 16 (UPI) -- Katy Perry's "Firework" is No. 1 on the U.S. record chart, Billboard.com reported Thursday.

Coming in at No. 2 on the Billboard Hot 100 is Rihanna's "What's My Name?" featuring Drake, followed by Bruno Mars's "Grenade" at No. 3, P!nk's "Raise Your Glass" at No. 4 and Ke$ha's "We R Who We R" at No. 5.

Rounding out the top tier are Rihanna's "Only Girl (In the World)" at No. 6, Bruno Mars's "Just the Way You Are" at No. 7, The Black Eyed Peas's "The Time (Dirty Bit)" at No. 8, Nelly's "Just a Dream" at No. 9 and Trey Songz's "Bottoms Up" featuring Nicki Minaj at No. 10.