Celebrities love them some soft-drinks!

Taylor Swift is the latest singer to jump on the soda promo bandwagon -- she's the new face of Diet Coke.

On Wednesday, the first official ad for T-Swift's Diet Coke campaign was released and (of course) it's pretty adorable.

Check out the video above to see how the blonde beauty writes her famous lyrics!

The 23-year-old's not the only pop star who has lent their name to a soda brand -- Beyonce is the latest face of Pepsi and debuted her (solo) promo with the beverage earlier this month.

Check out Bey's video above to see how she dances with herself!

So we gotta ask ... whose new promo do you prefer -- Taylor Swift for Diet Coke or Beyonce for Pepsi? Vote below!

Just for fun check out Britney Spears' 2001 Pepsi commercial -- such a classic.

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