Christina Aguilera Thanks Billie Eilish for 'Making My Daughter's Whole World' at L.A. Listening Party

The singer is mom to son Max, 15, and daughter Summer, 9

<p>Monica Schipper/FilmMagic; Kevin Mazur/WireImage</p> Billie Eilish, Christina Aguilera

Monica Schipper/FilmMagic; Kevin Mazur/WireImage

Billie Eilish, Christina Aguilera

Christina Aguilera's daughter had a major music moment this week.

On Wednesday, May 22, the singer, 43, shared a sweet video on her Instagram of her daughter Summer, 9, as she met Billie Eilish, 22, at the musician's Los Angeles listening party for her album Hit Me Hard and Soft.

In the video, Eilish can be seen hugging Summer, asking her for her name and signing a poster.

"Nice to meet you," Eilish says, posing with Summer for an adorable photo. "THANK YOU @billieeilish for making my daughter’s whole world at your LA listening party 🫶✨✨🫶," Aguilera wrote in her caption.

"I appreciate your kindness, thanks for signing her poster…we are both huge fans 🙏🏼 Congrats on the new album!"

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Related: Christina Aguilera Says 'Supportive' Daughter Summer, 9, Wants to Be Her Manager: 'I've Never Felt So Loved'

Aguilera shares her daughter with fiancé Matt Rutler. She is also mom to son Max Bratman, 15, whom she shares with ex Jordan Bratman.

In January, Aguilera revealed in a Vogue interview that her daughter has set her sights on becoming her manager — or “daught-ager” as she has now aptly been named — after spending time behind the scenes at her Las Vegas residency.

Speaking to the publication, Aguilera said, “After my show on New Year’s Eve, comes backstage and my daughter’s there. She’s so enraptured by the world behind the scenes and the production of everything, and she loves the band and the background singers ..."

“Before I go on stage, she knows I get nervous, and she’s like, ‘You’re going to do great, mama,’ ” the singer continued. “My manager will be like, ‘She’s coming for my job!'"

"And on the way to school the other day with her dad, she said, ‘When I grow up, I want to either be mama’s photographer or mama’s manager.’ It’s so funny.”

The "Genie in a Bottle" singer added that it was who came up with the genius buzzword for daughter Summer. “He was like, ‘Oh my God, she’s your daught-ager.’ So daught-ager is the word of the year. It’s just so cute,” Aguilera told Vogue. 

That same month, the mom of two shared several snaps to social media with her daughter, which appeared to have been taken after one of her performances at her Las Vegas residency.

The mother-daughter duo were snapped posing side by side, with Summer wrapping an arm around her mother’s neck and smiling widely while Aguilera closed her eyes and smiled contentedly. In another photo taken closer up of the pair, Summer could be seen smiling once again as the singer puckered her lips in a kiss.

The Grammy award winner captioned the post with, “Me & Mine ❄️”

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