Kourtney Kardashian's boyfriend - model Luka Sabbat - is coming under fire for making disparaging comments about Beyonce and her fan base.

Kourtney and Luka have been dating off-and-on for the past year. Kourtney is 40 and Luka is just 21 years old.

And while Kourtney has been getting young 'D' from Luka, the dreaded model has been getting fame and clout by dating the middle aged Kardashian.

So in a weird sense, their relationship makes a lot of sense.

But yesterday Luka may have overstepped his bounds, by going after Beyonce and her fans on Twitter. 

Look:

tumblr_pqaanxUbvd1qd45ayo1_1280
tumblr_pqaanxUbvd1qd45ayo5_1280
tumblr_pqaanxUbvd1qd45ayo4_1280
tumblr_pqaanxUbvd1qd45ayo2_1280
tumblr_pqaanxUbvd1qd45ayo3_1280

Luka was raised by his parents, Clark Sabbat and Jessica Romer - and he grew up splitting time between Paris and New York. His mom, Jessica Romer was a model and an assistant for the fashion show production powerhouse, Bureau Betak.

His dad, Clark Sabbat, designs a line of women’s apparels. Luka has Black, Irish, English, German, and Haitian ancestry, and identifies as of mixed ethnicity.

Kourtney Kardashian was surrounded by friends and family as she celebrated her 40th birthday — including a few of her exes.

Kourtney’s ex boyfriend Younes Bendjima and Luka Sabbat both attended the reality star’s lavish birthday party on Thursday night, alongside the father of her children, Scott Disick.

Bendjima, 25, posted a photo from the party to his Instagram Stories of a napkin that read, “Happy Birthday Kourt!” He also shared a video of him and a friend dancing with the caption, “ya know what time it is.”

And while Kourtney and Bendjima called it quits August 2018, the model appears to be in good graces with the family, even posing for a photo with Kris Jenner.