It’s possible that Kylo acquired an authentic Vader cape, but Making Star Wars notes that the Episode VIII chain clasp is not the same one from the original trilogy.
As the moviegoing public waits for the release of Rogue One: A Star Wars Story this December, director Rian Johnson has already begun the post-production process on his Star Wars: Episode VIII.
Given that Kylo Ren idolizes his late grandfather.
Unsurprisingly, details about the film are being kept under wraps, though the rumor mill has turned up some interesting tidbits lately.