Sophie Turner and Maisie Williams don't just play sisters on TV; they're soul sisters IRL — and now they have the matching tattoos to prove it.

Earlier this week, it was reported that the Game of Thrones stars walked into a tattoo parlor and emerged with matching tattoos. Turner officially revealed her freshly inked forearm on the red carpet at the 2016 Emmys. So, what was so precious to them that they were inspired to permanently engrave it into their skin? One simple, albeit life-changing date: "07.08.09." (That's August 7, 2009 in the U.K.)

Turner explained that the tat — which she got inked in peach after her mother's pleas — marks the day both she and Williams booked Game of Thrones and became Stark sisters. (Aww!)

"We've always kind of said we wanted matching tattoos," Turner told E! on the red carpet, adding that during Season 1, she and her Game of Thrones castmates made plans to get matching tattoos ("wolves" were among the options) at the end of the series. However, given the rate at which important characters die on Game of Thrones, Turner and Williams decided to expedite the tattoo process in case one of them got killed off before the final season.

"We don't know if we’re going to make it, so Maisie and I were like, ‘Let's get these ones before anyone kills us,’" Turner said. That's fair, TBH.

As for what to expect from Season 7 of Game of Thrones, Turner described it as "unbelievable," adding that she was left "speechless" by the next seven episodes. "I think fans are going to be really satisfied," she said.