Billie Eilish was on "on cloud nine" writing her eagerly awaited sophomore album, Happier Than Ever.

The 19-year-old megastar released the follow-up to 2019's critically-acclaimed When We All Fall Asleep, Where Do We Go? at midnight, and has admitted that she feels like "crying" because she's so proud of the LP that she and her brother Finneas created.

In a lengthly Instagram post, sharing the artwork, the Grammy-winner wrote: "“Happier Than Ever” my sophomore album is finally out. i can’t even process it. this was the most fulfilling most satisfying and profound experience i’ve ever had with my music." (see full post below).

Eilish recently admitted that she hopes her new album - which includes the hit singles "Your Power" and "Lost Cause" - "doesn't disappoint" after it broke a record before its release. Happier Than Ever was crowned the most pre-added album in Apple Music history with over 1,028,000 fans eager to get the LP in their ears first. Reacting to the news, Eilish commented: "That’s nuts. Wow, that’s nuts. I hope it doesn’t disappoint."

In support of the album, the superstar has announced a BBC special, 'Billie Eilish: Up Close'. The one-off progamme will air on Saturday, July 31 on BBC One at 10.30pm BST, with BBC Radio 1 DJ Clara Amfo set to interview the pop sensation about her meteoric rise to superstardom and being a role model.

In a recent press release it was announced: "In this 45-minute entertainment special filmed in Billie’s home town of Los Angeles, BBC Radio 1 DJ Clara Amfo will talk to Billie about her latest album ‘Happier Than Ever’, her extraordinary rise to fame, looking back at her remarkable success, the effect it has had on her life and her role as an inspiration for young people all over the world."

The likes of Adele, Ariana Grande and Harry Styles have previously landed their own 'At The BBC' TV specials in the past.

Eilish is also set to make her BBC Radio 1 Live Lounge debut, with her session airing on Saturday from 11.15pm on BBC iPlayer, and fans can hear an "incredible cover" on BBC Radio 1 on August 5 at 12pm BST.

Meanwhile, the 19-year-old has just announced that she is premiering her cinematic concert experience exclusively on Disney Plus. ‘Happier than Ever: A Love Letter to Los Angeles’ is set to hit the streaming service on September 3.

Listen/stream Billie Eilish here.