The 21-year-old actress and 19-year-old star, who play Sansa and Arya Stark on the hit HBO show, will sing in a new "Carpool Karaoke" series for Apple Music.
"STARKpool Karaoke? Lane of Thrones? @SophieT and @Maisie_Williams from @GameOfThrones are shooting a #CarpoolKaraoke for @applemusic!" the Carpool Karaoke Twitter account announced Sunday.
"Carpool Karaoke" is a recurring segment on The Late Late Show with James Corden. Apple purchased rights in July to an unscripted series based on the popular segment, which it will distribute on Apple Music.
"We love music, and 'Carpool Karaoke' celebrates it in a fun and unique way that is a hit with audiences of all ages," Apple senior vice president of Internet software and services Eddy Cue said at the time.
Turner and Williams made the announcement while attending SXSW in Austin. The actresses spoke on a panel Sunday with Game of Thrones creators David Benioff and Dan Weiss, who confirmed singer Ed Sheeran will guest star in Season 7.
"For years, we tried to get Ed Sheeran on the show to surprise Maisie, and this year we finally did it," Benioff said.