HBO debuted the first episode of the eighth and final season of "Game of Thrones" on Sunday after Season 7 concluded in August 2017.
The final season will include six episodes in total and bring to an end one of HBO's most popular shows which began in 2011.
"MOOD," Jonas said on Instagram alongside a comedic video of himself dressed as his fiancee Sophie Turner who portrays Sansa Stark on the fantasy drama.
The singer, who dons a dress and a red wig, models his outfit as the theme song from "Game of Thrones" plays in the background.
"Who ready?! I am," Jones said before the Season 8 premiere on Twitter alongside a video of herself displaying her dragon-covered onesie that she was wearing and the food that she had ready for the premiere which included "Game of Thrones"-themed Oreos.
Kimmel uploaded to Twitter a photo of himself sitting on the show's Iron Throne while wearing a crown and a fur scarf. "On my pointy couch, ready for tonight," the late night host said.
"Only One Will Win The Iron Throne #ME," Jessica Chastain said on Twitter alongside a short, sparking photo of herself posing on a fancy chair.
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The actress was also wearing green boots that featured dragons on them.
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