What better way to prove your friendship than by getting matching tattoos with your best friend? Well, that’s exactly what Kylie Jenner and Jordyn Woods did.

The longtime gal pals got inked by famous tattoo artist Jon Boy with identical “M” initials on the inside of their pinky fingers. And keeping with Kylie’s tattoo tradition, the tiny addition to their body art was red.

MORE: What Is Jordyn Woods’ Snapchat Name? Plus More Facts About Kylie Jenner’s Best Friend!

“M,” Kylie simply captioned a photo of the tattoos on Instagram last summer. Fans had some pretty good predictions for what the letter stands for with one guessing, “because it’s her grandmothers first initial of her first name.” Another jokingly wrote, “Miley Cyrus.” The friends have yet to reveal the secret meaning.

View this post on Instagram

M

A post shared by Kylie (@kyliejenner) on

However, this is not the first time Kylie, 19, has been under a tattoo gun. The KUWTK star has six small tattoos all over her body. They include a heart behind her right upper arm, sanity (written in phonetic form) on her hip, her grandmother’s name Mary Jo on her inner arm and “la” on her left ankle to cover up her homage to ex-boyfriend Tyga.

She also got matching butterfly tattoos with her new fling Travis Scott. Watch the video below to see her latest tattoo.

MORE: Kylie Jenner’s BFF Jordyn Woods Lost Her Father Right Before Filming ‘Life of Kylie’

Jordyn also has her own share of body art. The 19-year-old model has an eye on her knuckle, a heart behind her ear, the roman numeral 23 in honor of Michael Jordan on the back of her neck, a chakra down her spine, two overlapping triangles on her forearm, and “forever” written on her left shoulder.

Fans will get to see more of the BFFs on her new reality show Life of Kylie where the lip kit mogul promises to show viewers a whole new side of her. “When you grow up on camera, everyone feels like they know you but they don’t,” she said. “I feel like a lot of people have misconceptions on who I am. There’s an image I feel pressured to keep up with and who I really am with my friends. This show is a gift to my fans.”