The Instagram shows Kylie's hand gripping the wheel of her Range Rover, and it's captioned simply with a Santa emoji.
On Saturday, Kylie set the record straight, explaining that the ring was a gift from “a special someone.”
"Every year my Mom throws a huge Christmas Eve party and this years was so fun (and sparkly)! It was really special to end such a big year celebrating with all of my friends and family... and with an extra special gift from a special someone," she wrote on her app. "And NO, I'm not engaged :)"
Between the massive diamond and pics of them cuddled up at the party...
Can you blame people for thinking the two might be getting hitched?
Then in July, another ring got people talking after she similarly posted photos of the jewelry on Instagram. Just like she did this Christmas, Kylie quickly squashed that talk by tweeting, "Not planning on getting married anytime soon."
The makeup maven's most recent denial came in September, when big sister Kim Kardashian told Kylie she was confused by Tyga using the word "fiancee" in a Snapchat. Kylie debunked the rumors on her app, explaining that her 26-year-old boyfriend was mocking a video the couple had watched together.
She also posted a photo of the big sparkler on Twitter along with the words “Merry Christmas.”
Kylie made sure she wasn’t the only once one to receive fabulous gifts this holiday season. She made a huge donation of goods to the L.A. LGBT Center, a resource for LGBT teenagers. Kylie didn’t publicly make mention of her donations, but the center confirmed the charitable deed on Twitter.