"I'm really happy for them," the 35-year-old told Entertainment Tonight, adding that she gives Rob baby advice. "I think he'll be the best dad."
Kim, ever the diplomat (not to be confused with a secret agent), was one of the first to congratulate Rob and his fiancée, Blac Chyna, on their pregnancy announcement.
While the rest of the Kardashians have remained relatively silent on Rob's complicated relationship with Chyna, Kris Jenner vouched for her son's love in an interview with an Australian radio show.
"I haven't really seen her that much and I don't know her as well as everyone else, but she seems like a really nice girl," Jenner said back in March. "I just haven't been around her too much. But you know, he's been very, very happy lately and I think he's in a really good place. I don't know too much about their relationship."
Considering this was before Rob and Chyna's engagement and baby surprise, we have a feeling Jenner is going to get to know her future daughter-in-law REALLY well in the coming months (and years).