Katy Perry's 'Firework' No. 1 on Billboard Hot 100 for second straight week

For the first time in six weeks, an artist is on top of the Billboard Hot 100 singles chart for two consecutive weeks, and it’s Katy Perry’s “Firework” that breaks that streak. Former chart-topper Rihanna and her “What’s My Name?” move up one slot to No. 2. And Bruno Mars’ “Grenade” blasts a little closer to the top, moving up two places to No. 3. Check out the full top 10 below.

Dec. 16, 2010′s Billboard hot 100 singles top 10

No. 1 – Katy Perry, “Firework”

No. 2 – Rihanna, “What’s My Name?”

No. 3 – Bruno Mars, “Grenade”

No. 4 – Pink, “Raise Your Glass”

No. 5 – Ke$ha, “We R Who We R”

No. 6 – Rihanna, “Only Girl (In the World)”

No. 7 – Bruno Mars, “Just the Way You Are”

No. 8 – Black Eyed Peas, “The Time (Dirty Bit)”

No. 9 – Nelly, “Just a Dream”

No. 10 – Trey Songz, “Bottoms Up”

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