I'm starting to feel like Sam Smith is becoming an honorary Kardashian sibling.

Kim, Khloe, Kendall Jenner and Cara Delevingne made their way to The Forum in Los Angeles on Thursday to see Sam in concert, and of course, they snapped a ton of pics from the night.

Kim and co. "sang all night long" with the "Stay With Me" singer, who over the past few months have become sort of besties.

They later met up with him backstage where the Grammy nominee thanked the "beautiful human" for coming to his show.

And snapped a selfie with Kendall and Khloe.

Oh, wait it get's better. Earlier in the day Sam hung out with another extended member of the Kardashian family, Kim's husband, Kanye West who he met up with, along with Justin Bieber, at the Ellen DeGeneres show.