Kylie Jenner Shows Off New Diamond Ring

— -- Kylie Jenner got some serious bling for Christmas.

The youngest child of Kris and Caitlyn Jenner showed off a new diamond ring on her social media accounts Friday. The 18-year-old reality star was so impressed with the present Santa Claus left under the tree that she posted a photo of the ring to Instagram and Twitter.

Although there's no word on who the ring is from, Jenner is currently in a relationship with rapper Tyga. The two have been dating publicly since October 2014.

There have also been rumors that the two are engaged. In September, Tyga, 26, seemingly called Jenner his fiancée in a video posted to Instagram. A few months before, Jenner denied she was engaged to the rapper by tweeting, "Not planning on getting married anytime soon :)."