The 34-year-old socialite said as much in an interview with Style Session for Yahoo!. She and the reality star, also 34, were close friends while Kardashian served as Hilton's personal assistant in the early 2000s, and the star declared herself happy for her former BFF.
"We've known each other since we were little girls," Hilton said of Kardashian to host Joe Zee. "We've always been friends. It's nice to inspire people, so yeah, I'm really proud of her and what she's done now."
"[Kardashian and husband Kanye West] are so cute together," the television personality added before also calling the couple's daughter, North West, "so cute." "They're the perfect couple. [Kardashian] always wanted to have a family, so I'm really happy for her."
Hilton came to fame with Nicole Richie on Fox reality series The Simple Life, and is today a successful entrepreneur with several fashion and perfume lines. Many consider the socialite the first celebutante and credit the star with Kardashian's rise to notoriety.