Mom Surprised Kourtney Kardashian's So Calm with Baby

Mom Surprised Kourtney Kardashian's So Calm with Baby
Scott Disick and Kourtney Kardashian with their son Mason
Albert Michael//Startraks

03/03/2010 AT 08:00 AM EST

Kourtney Kardashian possesses a maternal quality that her own mother never had: serenity.

"She's just a great mom," Kris Jenner told PEOPLE in Las Vegas over the weekend. "It's incredible to see how calm and patient she is."

Jenner never had her doubts about Kardashian as a mother, but she is continually amazed at her daughter's motherly composure with her 11-week-old son, Mason Dash.

"I'm not a calm person," Jenner said. "It's like, where did she get that? It's not from me."

As for how she's adjusting to the role of grandma, Jenner said the feeling is unexplainable. "It's fabulous and I'm just having the best time," she said. "[Mason] is the most delicious baby."

It's safe to say the entire Kardashian family is swooning over Mason.

"He is so chubby and so cute. He's being really well fed," Kim Kardashian said at Tao Las Vegas during the launch of her new fragrance. "I'm obsessed with him. I have Kourtney and [father Scott Disick] send me pictures every day."

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