Taylor Swift has signed on as the new spokesperson for Diet Coke.

The "Love Story" hitmaker has teamed up with the beverage giant for a series of promotional duties, which will include print ads, commercials and events centred around her upcoming Red tour, which kicks off in Nebraska on March 13.

The partnership is perfect for Swift - the soft drink brand is best known for its iconic red packaging.

In a video on her official website, she says, "I wanted to share some news with you because we're actually making it official with one of the great loves of my life... Diet Coke..."

"We've been in conversations about this partnership that's gonna include so many fun things having to do with the tour, having to do with Diet Coke in general, behind the scenes of the commercial shoot."