Kendrick Lamar and Taylor Swift have sung each other's praises for some time.

Now they are making their mutual admiration official by having Lamar appear in Taylor Swift's video for her track 'Bad Blood', which will premiere May 17 during the Billboard Music Awards.

Lamar is one of a handful of celebrities who will appear in the video, including Lena Dunham, Gigi Hadid and Zendaya Coleman.

Swift made the announcement on Twitter earlier today.

Meet Welvin Da Great. @kendricklamar #BadBloodMusicVideo pic.twitter.com/iz6iG87NLE

— Taylor Swift (@taylorswift13) May 11, 2015

According to Swift, everybody was told to choose their own name for the video, so "Welvin Da Great" is a Lamar creation.

What do you think of K.Dot's participation in the project? Is it suspect or synergy?