Los Angeles - Kylie Jenner has made her musical debut on producer Burberry Perry's Beautiful Day song - and appears to sing the N-word.
The 18-year-old beauty is heavily auto-tuned on the track - which is inspired by US children's TV show Mister Roger's Neighbourhood and also features Lil Yachty, Justine Skye and Jordyn Woods.
And two minutes into the song the Keeping Up With The Kardashians star can be heard laughing and saying "I've never been on a song before..." before singing, "it's a beautiful day in the neighbourhood, beautiful day in the neighbourhood, I wish a fuck nigga would..."
The reality star then giggles with her pals Jordyn and Justine and adds "Come on Jordyn let's be serious stop this, We're gonna be serious about this" and the trio repeatedly declare they are "so sorry".
Listen to the song here:
Though the N-word is used throughout the song by Burbbery, it is the first time ever that Kylie has been heard saying it.
And the word is widely considered offensive for non African Americans to use because it was commonly used in the past as an ethnic slur by white people to identify people with black skin.
Beautiful Day was released on Wednesday and since news of Kylie's singing debut has spread, fans have taken to Twitter to complain about her contribution.
The backlash has prompted her collaborator, Jordyn, to defend the star on the social media site and deny that Kylie said the controversial word.
When one Twitter user tweeted:
Jordyn snapped back with: