Paris Hilton just performed her first-ever live concert at the historic Fonda Theatre in L.A. on Wednesday night, and out of all the stars in attendance, one baby boy caught our eye: her 4-month-old son Phoenix! The “Stars Are Blind” singer shared a rare new photo of Phoenix being held by his dad, Carter Reum, and our hearts are melting at the utter sweetness.

“Baby Phoenix watching me rehearse Stars Are Blind for my big show tonight. 💙 🎧 👶🏼🎤👸🏼💫,” Hilton wrote on Instagram Wednesday, along with two photos of her baby boy.

Her husband Reum is holding the baby, who is all dressed up in blue-and-white striped shorts overalls, a white cardigan, knee-high white socks, and white Balmain Paris tennis shoes. He’s also wearing headphones to protect his little ears as he gazes at his mama on stage.

In the second photo, Reum holds up Phoenix’s little hand so he can cheer for his sparkly mama, and it is so cute.

Photo : Cindy Ord/MG23/Getty Images for The Met Museum/Vogue

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The comments were full of love.

“Look at him 😍 he loves his mama,” one person wrote.

Marc Jacobs commented, “❤️❤️❤️.”

Kim Petras, who performed on stage with Hilton, commented, “💗.”

“Those adoring eyes … on both of them❤️❤️❤️❤️,” another wrote.

Someone else said, “Biggest flex is Paris Hilton being your literal mom 🙌.”

“You have the best and sweetest support ever 💖💗💖💗💖,” another said.

Photo : Jeff Kravitz/FilmMagic

Paris Hilton & Carter Reum Welcomed Their Son in Jan. 2023

Hilton and Reum welcomed their firstborn son via surrogate in Jan. 2023. They announced the news on Instagram, writing, “You are already loved beyond words 💙.”

On a Feb. episode of her podcast, This Is Paris, she announced her son’s name for the first time: Phoenix Barron Hilton Reum.

She explained the name in an interview with PEOPLE, where she also shared the first photos of her baby boy. “Phoenix has a few good pop culture reference points, but more importantly it’s the bird that flames out and then rises from the ashes to fly again,” she said. “I want my son to grow up knowing that disaster and triumph go around and come around throughout our lives. And that this should give us great hope for the future.”

Photo : Neil Mockford/GC Images

This Isn’t The First Time We Learned That Phoenix Is a Mama’s Boy

Baby Phoenix may have googly eyes for his mama as she rehearsed for her big show, but we already knew he was obsessed with the star.

In a March interview on The Tonight Show Starring Jimmy Fallon, Hilton shared some insights into their mother-son bond.

“You being a DJ, I assume you have a good playlist for the baby?” host Jimmy Fallin asked her. Hilton replied, “Yes, of course,” adding, “I actually sang, his favorite lullaby is my song, ‘Stars Are Blind.’ He has good taste in music.” Aww! He just loves his mama’s voice.

Later in the interview, she gushed, “He’s such an angel. He’s the best. He’s the cutest, sweetest. … I’m just so obsessed with him it feels like my heart is going to explode.”