As mentioned in the tweet above, the new Bond theme was co-written by Billie's brother Finneas.
British actor James Norton the favourite to replace Daniel Craig as James Bond • James Bond 2020: How many countries has 007 been to? Eon Productions, who produce the Bond movies, later confirmed the news.
The movie hits theaters April 10.
The Bad Guy singer was the favourite for the James Bond track, despite rumours that Beyonce, Dua Lipa or Lewis Capaldi could be in line for the job. "As much as I like Billie I'm quite disappointed in this".
"It feels insane to be a part of this in every way", said Billie regarding being chosen for the theme song. "To be able to score the theme song to a film that is part of such a legendary series is a huge honour".
Billie Eilish is the latest Bond girl - of sorts! Casino Royale's "You Know My Name" by the late Chris Cornell was basically a rock song.
With 6 chances at Grammys gold, Eilish is one of the top-nominated artists at this year's awards gala, set for January 26.
As iconic as his Aston Martin, his taste for dry martinis, and his penchant for short-lived sexual relationships is James Bond's proclivity to surround himself with some pretty memorable music.
No Time To Die is released on April 2 in the United Kingdom and April 8 in the USA, and is directed by Cary Joji Fukunaga.
Additionally, the film's director, Cary Fukunaga, said, "There are a chosen few who record a Bond theme".