"She was amazing," Kris told ET about Kim's recent delivery at the Hollywood Reporter's 2015 Women in Entertainment Breakfast on Wednesday. "I mean, she's a really strong girl -- a little cranky when she gets uncomfortable -- but, other than that, she's amazing."
Kris also shared that baby Saint is now home from the hospital.
"We definitely went [to Cedars-Sinai Medical Center] quite a few times, and now he's home, so we're happy that everyone's safe and sound and all tucked in, so it's good," she smiled.
The 60-year-old momager said it's still too early to tell Saint's personality.
"He's amazing. We've only known him a few days so we'll see if he's calm, or you know, anxious," Kris explained. "You know, we'll see what kind of kid he is!"
Kim gave birth to her second child with her husband, Kanye West, on Saturday at Cedars-Sinai Medical Center in Los Angeles. Unfortunately, she dealt with the same complications during labor that she faced when she delivered daughter North West in 2013, a source confirmed to ET. Kim suffered from placenta accreta, a condition in which the placenta remains attached to the wall of the uterus, instead of coming out after the birth of the baby.
In a post Kim wrote on her website last month, she revealed that her doctor "had to stick his entire arm in [her] and detach the placenta with his hand, scraping it away from [her] uterus with his fingernails," when she gave birth to North, who's now two years old. "My mom was crying; she had never seen anything like this before," Kim revealed.
Thankfully, the Keeping Up With the Kardashians star is doing just fine now, and Kris isn't the only Kardashian already gushing about Saint. Khloe Kardashian recently talked about her new nephew on her app's live stream.
"My little nephew was born he is so cute and so perfect," Khloe shared. "I love him and mommy and daddy are doing fantastic."