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Kathy Hilton celebrated the arrival of her new grandson after Paris Hilton and Carter Reum’s surrogate gave birth to a baby boy.

“Paris and Carter, we all know you’re going to be essentially the most superb dad and mom,” the “Real Housewives of Beverly Hills” star told People on Thursday on behalf of herself and her husband, Rick Hilton.

“We are so thrilled for you each!” Kathy, 63, continued. “Thank you for this excellent addition to our ever-growing, lovely household.”

The assertion got here two days after Paris, 41, debuted her toddler through Instagram.

“You are already cherished past phrases,” the “Simple Life” alum gushed.

She and Reum, additionally 41, have but to disclose the new child’s title.

The couple pursued in vitro fertilization earlier than tying the knot in November 2021 — however Kathy publicly alleged final 12 months that her daughter’s fertility journey had been a “struggle.”

Paris Hilton holding her newborn son's hand.
The toddler arrived through surrogate.

In a November 2022 E! News interview, the Bravolebrity claimed, “I do know she is attempting and attempting, and I at all times say, ‘Just loosen up.’ … It doesn’t occur identical to that.”

Paris promptly refuted her mom’s comment, telling TMZ she and the businessman had “tons of embyros … ready.”

The DJ subsequently took to her Instagram Stories to additional set the record straight.

Paris Hilton gazing at Carter Reum.
Paris wed Carter Reum in November 2021.
Getty Images for LACMA

“I’m getting tons of messages of individuals asking me once I’m having a baby,” the lodge heiress wrote. “My husband and I at all times needed to get pleasure from our first 12 months of marriage collectively as a pair.”

She concluded, “IVF is at all times a journey for everybody however we’re so lucky that we’ve got a number of wholesome embryos prepared and ready to be a part of our Cutesy Crew!”

Paris Hilton smiling at Carter Reum in a mirror selfie.
The “Simple Life” alum has been sharing her IVF journey since 2021.

Kim Kardashian, who welcomed two of her 4 youngsters via surrogate, helped advise Paris on “IVF, surrogacy and physician suggestions,” a supply instructed Page Six on Wednesday.

The “Kardashians” star, 42, commented on Paris’ announcement, writing that she felt “so blissful” for the brand new dad and mom.

In a put up of her personal on Wednesday, Nicky Hilton welcomed her sister to the “most lovely experience” of parenthood.

“There is not any larger love,” the style designer, 39, continued. “You are going to be the perfect mommy. What a fortunate boy! 💙.”

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