The singer left fans stunned by posing for the fashion bible as a stripped-down blonde bombshell, bursting out of a pink-and-flesh-coloured bodice and other lingerie looks as part of a revealing shoot, which Billie came up with to pay her respects to Marilyn Monroe and other 1940s and 1950s pin-ups.
The new photos, which were posted online on Sunday (02May21), came as quite the shock because the 19 year old is famous for wearing baggy clothing, and once insisted she chooses her loose-fitting outfits so no one can spot her real body shape.
And the sexy shots were a big hit among the fashion world and beyond.
Bieber tweeted, "SHEEESH," and added a happy face emoji with hearts for eyes, while Emily added, "Yusss," and Hadid wrote, BILLIIEEEEEEEEEEEEEEE" with a series of hearts.
Eilish's throwback lingerie shoot also impressed Meghan Trainor, who wrote, "WOWWW... SO STUNNING" with fire emojis, Sara Sampaio, Shanina Shaik, and Tess Holliday, while Vogue editor Edward Enninful added, "Thank you for trusting us... YOU KILLED IT."
In an interview for the magazine, Billie Eilish reveals she channels "anger, disappointment and frustration" into new album. Her new album might be called "Happier Than Ever", but she insists the collection isn't as upbeat as it appears.
The "Your Power" singer channelled a lot of "anger" and "frustration" into the songs on her hotly-anticipated follow-up to her acclaimed 2019 debut record "When We All Fall Asleep, Where Do We Go?".
Speaking to the latest issue of British Vogue magazine, of which she is the cover star, Billie says, "It was very satisfying to scream. Because I was very angry. There's so much anger in those songs - anger and disappointment and frustration."
The "Therefore I Am" hitmaker also touched on how her songwriting has matured as she discussed the positives to come out of the global pandemic.
"I've grown so much and gotten so much better in my voice, it's crazy to think about. I think change is one of the best gifts in the world," she added.
Billie releases "Happier Than Ever" on 30 July (21), which she has hailed as her "favourite thing" she's "ever created."