“She’s literally the most beautiful pregnant woman I’ve ever seen in my life,” shares the 36-year-old heiress.
Hilton adds that her sister hasn’t felt “sick” during this pregnancy, explaining, “She is a trooper, and I can’t wait for the baby.”
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Either way, though, Hilton says her little sister is ready for baby No. 2. “She’s going to be amazing,” says Hilton, adding, “Lily-Grace actually just started walking, so that was amazing to get a video the other day of that. We’ve been waiting for that.”
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Hilton has been dating The Leftovers star Chris Zylka since earlier this year. “I’ve never been happier,” she tells PEOPLE. “He’s my soulmate. I feel like he’s my best friend, and we’re really excited for our future together.”
As for starting her own family, the older sister teases, “We’ll see.”