"Birthday" is a song by English singer Anne-Marie.

She co-wrote the song with Delacey, Keith Sorrells and Warren Felder.

[4] The official music video was filmed in Los Angeles and uploaded to YouTube on 7 February 2020.

The video shows Anne-Marie celebrating her birthday like a princess, complete with a ball gown and dancing in an opulent room.

[1] Anne-Marie performed the song for the first time on The Greatest Dancer on 8 February 2020.