A week after Billie Eilish joined Justin Bieber on stage during his nostalgic “One Less Lonely Girl” Coachella performance, Hailey Bieber detailed how she was the mastermind behind the viral moment. 

There’s gonna be one less lonely girl—Hailey Bieber will make sure of it. 

A week after Billie Eilish joined Justin Bieber on stage for his “One Less Lonely Girl” performance at Coachella, the Rhode founder revealed it was her plan all along. 

“It was incredible,” Hailey told Time at the Time100 Gala in New York April 23. “We love Billie so much. We adore her, couldn’t love her more. I just thought it would be so full circle to have that happen since they met for the first time at Coachella.”

Indeed, Billie—who has been a vocal Belieber for most of her life—first crossed paths with Justin in the crowd of Ariana Grande’s set at Coachella in 2019, where the “Bad Guy” singer fell to the ground in awe. 

And so, Hailey admitted had been thinking of Billie joining Justin on stage for his nostalgic set “for months,” but she kept it a secret from the Oscar winner.

“I thought it would be a really fun idea so to see it come to life and to see it happen,” Hailey mused. “Obviously, we told her in the moment and she is the best sport and the best woman.”

The 29-year-old emphasized, “I couldn’t love her more, truly.”

Meanwhile, Billie couldn’t have loved the moment more. The 24-year-old shared her reaction on Instagram, alongside several throwback videos and photos of her showing off her fandom for Justin. 

In one image from Billie’s April 23 post, she proved she knew the absolute most about Justin, writing down his exact time of birth, the hospital and room where he was born and even the doctor who delivered him. In another, she included a screenshot of a birthday message she wrote to Justin in 2014. 

“Today, the best singer and the best person in the world was born,” Billie wrote. “Now words can explain how much I love you. If only you knew I existed. I have always been a Belieber and I always will be.”

Hailey might have orchestrated one of the best Coachella moments, but it wasn’t the only one to see. Keep reading for every star who stepped out…

One less lonely girl. The "Baby" singer invited the Grammy winner onstage during his Coachella performance.

The BLACKPINK member made a surprise appearace during Anyma's set.

Follow your arrow to see the country singer, who was added to the Coachella Weekend 2 lineup last-minute as a surprise act.

The Kardashians stars took over the 818 Outpost presented by Cash App.

You best belieb the beauty mogul toasted to her Rhode World pop-up with PATRÓN Tequila.

Please, please, please don't miss the "Juno" singer bringing out the Queen of Pop for a surprise duet.

The singers teamed up to perform their "Mamiii" collaboration.

Sophia Laforteza, Daniela Avanzini, Lara Raj, Megan Skiendiel and Yoonchae were dressed for a gnarly performance at Coachella's second weekend.

The BFFs kept up at Camp Poosh sponsored by Instacart, Loft, Sexy Hair, TikTok shop, Update, Lemme, Kylie Cosmetics, Cotton, Eternal Water, Antler, 818 Tequilla and more.

That's hot. The Simple Life alum hosted the Parívie Oasis event near Coachella.

The "Ahora Me Llama" singer was unstoppable during her headlining performance.

Good 4 them. The singers shared a hug after sharing the stage together.

The After Earth actor struck a pose inside the YouTube Coachella Photo Studio.

There was no ridiculousness with the MTV star at Neon Carnival presented by Rivian and LaCroix Sparkling Water.

The DJ stopped by the Lollipop Star booth to debut a white peach flavor lollipop that plays his smash hit "Bad Angel."

The "Good Life" singer raise a cup up of PATRÓN Tequila for all her day ones at Revolve Festival.

One outfit after another. The Oscar nominee showed off her abs in head-to-toe Guess.

The Disney Channel alum was kickin' it at Nylon House in the Desert presented by Matrix.

All the stars were closer during the Grammy winner's surprise performance during Justin Bieber's set.

Amelia Gray Hamlin & Nicolai Marciano 

The model and the son of Guess' founder head into the festival hand-in-hand. 

POV: The TikToker recharging at the Red Bull Mirage event.

The Overcompensating star was anything but that at the Heineken House.

The "About Damn Time" rapper twerked alongside a Labubu mascot during Sexyy Red's set at the Sahara Tent.

All hands on deck. The DJ and the singer performed "No Broke Boys" on the Do LaB stage.

The Victorious alum made it shine with the SVEDKA Vodka SVEDPHONE, the brand's limited-edition flip phone, and UNOde50 jewelry while out and about in the desert.

Raise a glass to the Vanderpump Rules alum at the Aperol Day Club.

Never say never to the "Yukon" singer's Coachella debut.

The podcaster stayed hydrated with Agua De Kefir at the Aguachella pre-game party.

Feeling euphoric. The Euphoria actress blew a kiss as she stopped by the Urban Decay booth at the 818 Outpost.

The "Espresso" singer was working late, performing her headlining set at the music festival.