1

The 34-year-old danced her heart out in Beyonce's "Sorry."

2

There may never be a better shirtless cameo than the Spaniard in Shakira's "Gypsy."

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3

The Dane is no stranger to trying new things, and came out with her own single called "Oxygen."

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4

The former No. 1 appeared in her then-boyfriend Redfoo's hit "Let's Get Ridiculous."

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5

The musicians featured both Andy Murray and Novak Djokovic in their song "Autograph."

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6

The American showed off her singing chops with "I Will Survive" on The Tonight Show Starring Jimmy Fallon.

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7

Martin Solveig's massive hit "Hello" also has appearances by Djokovic and Mathilde Johansson.

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8

After retiring, the Belgian showed up on a reality show called The 12 Labors of Justine Henin and sang "Now It's Time."

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9

The American shared a little free-style rapping with the world.

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10

Wyclef Jean came out with "Venus (I'm Ready)" in honor of the great American champion.

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