Chart Article

10

Run This Town

The Roc Nation protégé, alongside Kanye West, teamed up yet again with boss-man Jay-Z for the anthem of 2009. It's worth mentioning that "Run This Town" marked Rihanna's first musical appearance since her altercation with Chris Brown, and what a return it was.
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9

S&M

Rihanna plays bad so good. The singer pulls out the whips and chains for the risque "S&M" song and video, even getting flagged by YouTube viewers.
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8

What's My Name?

Rihanna and Drake give us a glimpse into their maybe-was romantic encounter in the "Loud" duet. It became her eighth No. 1 a year ago this month.
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7

Only Girl (In The World)

"Only Girl" introduced the world to a red-tressed Rihanna and past her "Rated R" rainy days. And, it took RiRi to a new comfort zone: dance. The first single off "Loud" won the singer a Grammy for Best Dance Recording.
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6

Rude Boy

Rihanna will tell you how she wants it, when she wants, and at what speed. Yes, we said it. Take "Rude Boy." The "Rated R" single's saucy lyrics and vibrant Caribbean visuals kept the singer at No. 1 for five weeks.
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5

Take A Bow

Man, Ne-Yo can surely write a ballad to empower a woman scorned (hear also: "Irreplaceable"). "You're so ugly when you cry. Please. Just cut it out," Rihanna sings on "Take a Bow." The Stargate-produced ballad, heavy with 'tude, took Rihanna all the way to No. 1.
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4

Disturbia

There's no denying Rihanna sharpened her acting chops for "Disturbia." But could Chris Brown have done better than his ex? C.Breezy, who co-wrote the two-week No. 1, is said to have passed "Disturbia" to RiRi because he felt a female voice would do it justice.
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3

Umbrella

Jay-Z said it best, "Rihanna: Good girl gone bad." "Umbrella" was a defining moment in Rihanna's career and fashion evolution. The island girl cut and colored her tresses, taking a turn for the sexy and making "Umbrella" Rihanna's longest No. 1 as a lead artist.
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2

Love The Way You Lie

After a turbulent end to her and Chris Brown's relationship, Rihanna bravely jumped on Eminem's emotional song and controversial video about domestic violence, "Love the Way You Lie," which Rihanna crafted a sequel to on "Loud." It was powerful enough to stay up top for seven weeks straight.
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1

Live Your Life

Who more perfect to team up with T.I. for "Live Your Life" than the "gangsta 4 life" herself, Rihanna? T.I.'s swaggerific anthem of 2008 won the two artists the 2009 BET Hip-Hop Awards for Best Hip-Hop Collaboration and Best Hip-Hop Video.
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Photos: Rihanna's Fashion Evolution