Paris Hilton leaned on 'rock' Kim Kardashian during surrogacy journey

Paris Hilton is reportedly thankful for her former assistant Kim Kardashian for helping her "every step of the way" during her surrogacy journey.

An insider spoke to MailOnline and shared that the Skims founder was the socialite’s "rock" while she was preparing to welcome a baby with Carter Reum via surrogacy.

With Kim welcoming two of her four children, Chicago and Psalm, via surrogacy, the Keeping Up With the Kardashians star gave Paris a helping hand in letting the newborn child become "a part of the family".

"Paris saw what an amazing experience using a surrogate was for Kim and confided in her from when the baby was just a thought until now," the source told MailOnline.

"Kim just made sure that Paris got the best of everything in terms of care and resources."

"Paris is forever grateful."

"She devoted so much of her time to making sure that Paris had the beautiful experience that she had with surrogacy," they told the outlet.

Paris Hilton's surrogacy journey laid bare

Prior to the birth of her baby, the heiress consistently expressed her desire wish to become a mom.

Speaking to People, she said, "We knew we wanted to start a family, and I was like, 'This is perfect timing. Usually, I'm on a plane 250 days out of the year, and let's just get all of the eggs stocked and ready,' and we have tons of them just waiting."

"We started going and doing it like a few months in because the world was shut down," she revealed at the time.