Kylie Jenner’s fans have been left confused after the reality star shared an old Christmas card to Instagram thanks to one tiny detail.

“Throwback to my favorite family xmas card 🥹,” Kylie wrote alongside a photo of most of the Kardashian and Jenner siblings.

Kylie Jenner’s fans have been left confused by an odd detail in an old Christmas card. Photo: Instagram/kyliejenner
Khloe Kardashian, Kendall Jenner, Kim Kardashian, Kris Jenner, Caitlyn Jenner, Kourtney Kardashian and Rob Kardashian appear in the card with Kylie.

However, on the second slide, the card reads: “Merry Christmas, with love, the Jenners and the Kardashians, Bruce, Kris, Kourtney, Casey, Kimberly, Khloe, Robert, Kendall & Kylie,” with many questioning who Casey is

“Everyone wondering who Casey is and what did they do to her,” one user wrote, while another added, “Okay I will be the one who will ask the awkward question, who is Casey?”

“Is Casey in the room with us?” a third said.

“Who the hell is Casey?” someone else asked.

Many fans had no idea who Casey was after seeing her name written on the card. Photo: Instagram/kyliejenner
Others poked fun at those who don’t know that Casey is Kylie’s half-sister, who she had mysteriously cut out of the first photo.

“Y’all are new ones if you don’t even know who is Cassandra,” one fan commented.

“I’d be insulted if my name was there but not my photo 😂,” another said.

“Pretty sure Casey is behind Robert and just cropped,” a third said.

“The fact y’all cut out Casey is sad,” someone else wrote.

Others pointed out that most people in the photo looked very different nowadays, with one fan writing, “And none of you even resemble this picture!”