'Shake It Off' beauty Taylor Swift has just unveiled her brand new promotional video for Diet Coke, which also stars her own pet kitten, Olivia Benson. 

Earlier this afternoon, she posted a link to the adorable commercial and accompanied it with the cute caption: "Behold, the Diet Coke ad that depicts my perfect world. Featuring a new song and Olivia, who is now a cat actress."

In the clip, Swift can be seen sipping on a bottle of the popular soft drink and every time she takes a mouthful, more and more cats appear until the entire room is overrun with felines. The commercial ends with her new kitten, Olivia Benson, sitting beside a poster that boasts the official artwork for her new album, '1989'.

Swift, meanwhile, recently announced that for the next 13 days in the lead up to the release of her new record, she will treat fans to exclusive lyrics from the songs on the track list. 

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Watch the advert in full here: