Kim Kardashian has credited her friend and fellow reality TV star Paris Hilton with "giving her a career" many years ago.
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In a recent episode of Keeping Up With The Kardashians, Kim told sister Khloe she'd "do anything" for the hotel heiress - including guest star in her new music video.
Kim agreed to feature in Hilton's video 'Best Friend's Ass', which was released earlier this year.
"I really would want to do anything for her," she said.
"She literally gave me a career, and I totally acknowledge that."
These days, Kim and Paris are both happily reaping the benefits of their fame, but they weren't always on an even playing field.
Before becoming a reality TV superstar, Kim once worked as Paris' closet organiser, as well as taking care of her chihuahua Tinkerbell.
The pair were often seen out on the town together as Kim made her way into more and more paparazzi snaps.
"A lot of people - no matter how they got their success - would, like, not say, 'I got my career because of Paris'," Khloe told her sister in the clip.
"You're so sweet and kind, and your schedule is crazy," she added.
"I would drop it [all] for her," Kim said. "It's important to me to be loyal to people."