With production continuing on Game of Thrones Season 7 in various locations around the world, new set photos surfaced which give us our first look at Maisie Williams as Arya Stark, wearing a much different costume than we're accustomed to seeing her wearing, over the past few seasons. The actress was also seen alongside a co-star that could tease a massive plot point moving forward through Season 7. If you haven't caught up with Game of Thrones quite yet, there will be SPOILERS below, so read on at your own risk.

At the end of Season 4, Arya Stark left Westeros to find Jaquen H'gar (Tom Wlaschiha) in Braavos, where she begun her training to become one of the Faceless Men. She remained in Braavos until the very end of last season, where, in the season finale, she surprisingly showed up using someone else's face, killing the nefarious Walder Frey (David Bradley), who had orchestrated the murder of her brother Robb Stark (Richard Madden) at the Red Wedding in Season 3. These new photos which surfaced on various Twitter accounts not only show Arya wearing what looks like a traditional Northern costume, but she is also seen sitting next to her on-screen brother, Isaac Hempstead Wright (Bran Stark) in the makeup trailer.

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The mere sight of both Maisie Williams and Isaac Hempstead Wright on set together has sparked speculation that the surviving Stark children may finally reunite. Bran Stark, Arya Stark and Sansa Stark (Sophie Turner) haven't been seen together since the first season, when their father was beheaded by King Joffrey (Jack Gleeson). With Arya's return to Westeros and Bran finally making it to The Wall at the end of Season 6, the Stark siblings' reunion could be imminent, although that has not been confirmed, nor have any plot details from this highly-anticipated season. Then again, just because they're both on set at the same time, doesn't necessarily mean they're filming scenes together.

These photos were taken at Linen Mill Studios in Belfast, Ireland, and there have also been a number of other cast members spotted, such as Kit Harington (Jon Snow), Gwendoline Christie (Brienne of Tarth), Liam Cunningham (Davos Seaworth), Daniel Portman (Podrick) and Bella Ramsey (Lyanna Mormont). Since all of these characters are pivotal figures in the North, it's possible they're all convening for a meeting of some sorts. Perhaps all of these characters will be welcoming the Stark siblings back to their homeland of Winterfell.

Much like last season, HBO hasn't revealed any plot details for Game of Thrones Season 7, but we do know it will be shorter than the six previous seasons. The network confirmed that the season will premiere in Summer 2017, with the eighth and final season believed to be comprised of six episodes, most likely debuting in 2018. Take a look at these new set photos below.