Paris Hilton says her two little ones share an unbreakable bond.
In an exclusive conversation with PEOPLE, the 44-year-old entrepreneur gushes about the connection between her son Phoenix Barron, 2, and daughter London Marilyn, who is 22 months old.
"They are best friends," Hilton shares of her children with husband Carter Reum. She describes the pair as "inseparable" and "always together."
"It's like they're twins," she continues proudly. "It's just the cutest thing. It's like a built-in best friend for life."
Hilton and Reum, also 44, became parents in January 2023 when they welcomed Phoenix.
"It's always been my dream to be a mother, and I'm so happy that Carter and I found each other. We are so excited to start our family together, and our hearts are exploding with love for our baby boy," the Parívie founder told PEOPLE at the time.
By November 2023, the family had grown again with the arrival of daughter London. Hilton announced her baby girl’s birth on Thanksgiving with an Instagram post showing a pink outfit embroidered with the name London. She captioned it, “Thankful for my baby girl🥹🩷👶🏼.”
Now a mom of two toddlers, Hilton says time is moving quickly. "Oh my God, they're growing up so fast. They're both so tall and so smart," she says.
She also praises Phoenix for his role as an older brother. According to Hilton, he is "the best big brother" because "he loves his little sister so much and is so cute with her and so protective, always watching after her." London feels the same way, Hilton notes, saying she "adores him and looks up to him so much."
Since moving into their new house, Hilton says the kids have been making joyful memories together. "They are loving it in their new rooms, decorating them, and just running around in the backyard, doing adventures, going on the waterslide together, having pool parties, with all the cousins coming over," the Stars Are Blind singer explains. "It's just been so special, creating all these memories in our forever home."