The teen took to Instagram today (28/12/15) to show off the ink, which is located on the right side of her hip. Opting for a red hue, the tat reads: "L'sa-na-telé".
Nope, we're not quite sure what it means either. And with Kylie simply captioning the snap with "All red", it seems like she's not quite ready to reveal its meaning!
Not stopping there with her Instagram posts, the reality star also treated fans to a selfie. And you can forget about cosy jumpers and jeans, Kylie proved that she keeps it glam as always over the Christmas period - would we expect anything less?!
Kylie's outfit choice was a teeny tiny black bodycon dress that showed off her svelte figure. How can she still look this good straight after Christmas? We'd struggle to fit in to our LBD after all the turkey and chocolate we've consumed!
And in sunny California there's no need for tights. Kylie completed her look with bare legs, pristine white sneakers and a glossy mane.
Continuing with her envy-inducing social media posts, the 18-year-old also showed off her new bling - a very fancy vintage Bvlgari watch. Featuring diamonds and a gold intricate pattern, there's no doubt this beauty would have cost a few bob.
But the jewellery piece that's really got everyone talking is Kylie's glitzy diamond ring, that prompted speculation that the youngest Kardashian/Jenner sister had got engaged!
On Christmas Day, she showed off a giant ring and despite the ring being photographed on her right hand, many fans interpreted the bling as a proposal from Kylie's rapper boyfriend, Tyga.
The pair went official in August this year, around the time Kylie celebrated her 18th birthday.