Nicky Hilton Says Her and Sister Paris' Kids Have Play Dates 'Every Day After School' (Exclusive)

"They don't visit New York often so it's fun to have all the cousins together," Nicky Hilton Rothschild tells PEOPLE

It's not every day the Hilton sisters are in the same city — and with their kids!

Speaking with PEOPLE on Monday at the God's Love We Deliver Golden Heart Awards, an event to raise money for the organization that provides medically tailored meals and nutrition services for individuals living with severe illness, Nicky Hilton Rothschild, 40, shared that sister Paris Hilton, 42, is in New York City with son Phoenix, 8 months, and their little ones have been spending time together.

"My sister is in town with her son Phoenix and it's really cute," Hilton Rothschild says. "My kids are having playdates with her kids every day after school. They don't visit New York often so it's fun to have all the cousins together."

"They're also going to the park in Washington Square. It's been beautiful fall weather," she adds.

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Related: Nicky Hilton and Sister Paris Hilton Pose with Sons in Sweet Candid Photo for National Sons Day

Hilton Rothschild first shared that she had welcomed her third baby, a son, with husband James Rothschild on Instagram in July 2022. Since then couple still hasn't disclosed the baby's moniker.

"We are officially a party of 5!" she wrote on Instagram, sharing a black-and-white silhouette image of the proud parents. "Welcome to the world sweet boy. Mom, dad and big sisters could not be more smitten. 💙."

Along with her son, she shares daughters Lily-Grace Victoria, 6, and Theodora "Teddy" Marilyn, 5, with her husband.

Related: Paris Hilton Says Baby Son Phoenix Has 'Changed My Life in Every Way' (Exclusive)

Hilton and Carter Reum, 42, quietly welcomed their first child together on Jan. 16, 2023, via surrogate. The pair, who married in late 2021, kept the news of their baby boy to themselves for over a week.

Hilton later announced Phoenix's arrival eight days after his birth on Instagram with a close-up photo of her holding his hand, writing, "You are already loved beyond words 💙."

While recently chatting with PEOPLE about her upcoming "Be an Icon" kitchen and home collection with Walmart, the proud mom opened up about how she's grown since welcoming her son.

Noting how the multiple roles she plays — from singer to DJ, and author to businesswoman — are "definitely a lot to balance," Hilton said, "I always make Phoenix my first priority, and I've learned how to say no."

"I'm constantly saying no to things, because I just want to spend as much time with him as possible, and I just don't want to miss any of these special moments in his life and all these milestones," she continued.

"He's my everything, so I always put him first," Hilton added of her baby boy.

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