Paris Hilton gifted her mom Kathy a Chanel bag before revealing that she had a newborn son: 'Maybe she won't be so upset that I didn't tell her'

• Paris Hilton gifted Kathy Hilton with a Chanel bag before revealing her son Phoenix. 
• She said she didn't immediately tell her family about the newborn because her life had been so "invaded."
• The moment Kathy met her grandson was captured for Paris's reality show "Paris In Love."

In a new interview with Rolling Stone, Paris Hilton admitted that she gifted her mom Kathy Hilton a blue Chanel bag so that she wouldn't be "upset" when Paris revealed she'd had a son via a surrogate without telling her family. 

"I was like, if I give her Chanel first, maybe she won't be so upset that I didn't tell her about this," the DJ and reality star explained to contributing editor Alex Morris. 

Paris previously explained on her iHeartRadio podcast "This Is Paris" that she wanted to keep the surrogate's pregnancy a secret because she and her husband Carter Reum "wanted to have this journey be us only." 

But she revealed further details of the moment that Kathy learned that Phoenix Barron Hilton Reum existed and met her grandson for the first time a week after his birthday.

"I was holding the baby on my shoulder with a blanket over him, and then I just sat down. She's like, 'What is that?' And I was like, 'A baby … meet your grandson,'" Paris recalled. "She's like, 'Is this yours?' And she starts crying. She's like, 'Let me hold him. He's the most beautiful baby I've ever seen in my life. Oh, he's so beautiful.' She was just in tears."

The reality star also explained to Morris why she went to such extremes, like disguising herself in a brunette wig to witness Phoenix's birth at Cedars-Sinai hospital. 

"My life has just been so public, my whole life has been, just, invaded; I felt like, for my baby, I just wanted him to come into the world and just be here," she said, reportedly trailing off when trying to describe the "weird" attention her fame attracts. 

Though he's just a few months old, Phoenix's life is already influenced by his mom's public life. Paris said that her surrogate watched episodes of "The Simple Life" while pregnant so that the baby would hear his mom's voice regularly. 

Plus, his first meeting with his grandma Kathy was captured by cameras for Paris's Peacock reality show "Paris In Love."

Paris Hilton's memoir is available now.