On Tuesday, May 7, Hilton, 43, posted an adorable clip on TikTok showing Phoenix, 16 months, playing with his sister London, 5 months, in her baby bouncer.

“Are you the nice big brother?” the DJ and heiress asked in the video, adding, “Not too hard,” as Phoenix giggled and bounced London up and down.

“It’s okay London,” Hilton told the little one as she looked up with a surprised expression on her face. “I don’t want her to pop out,” the Paris in Love star, who shares her children with husband Carter Reum, 43, said behind the camera.

“Not too hard honey … that’s a baby,” Hilton added to her eldest child, as London bounced around.

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“London, are you okay?” she asked, as Phoenix squealed and laughed behind her. As she started to cry, Hilton said, “She’s scared honey, no, no, no.”

“It’s okay, he’s just excited,” Hilton told London of her big brother, before telling her kids she loved them. “Love you London,” she told her daughter, adding to Phoenix, “I love you.”

“Baby P sometimes gets a little too excited around his lil sis👶🏼👶🏼,” Hilton captioned the post, while Adrián Berenguer’s “Little Things” played in the background.

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Hilton regularly shares family updates on social media. On May 2, she shared a sweet video of London on TikTok showing the youngster lying on her back and wearing a onesie with unicorns on it. “My little cutie patootie London 🩷👶🏻✨,” Hilton wrote in the caption.

The new clip comes after Hilton shared the first official photos of her daughter exclusively with PEOPLE last month. “With Mother’s Day around the corner, I couldn’t resist introducing the world to my baby girl London and sharing these precious moments of our family together,” she said.

“Phoenix and London are everything to me, and I feel like the luckiest woman in the world to be married to the love of my life and have our beautiful family. We make the absolute best team, and my life finally feels complete.”