AceShowbiz -

Kourtney Kardashian has hinted that she wants to give her baby son Mason Dash Disick a new sister or brother. During an interview with E! News to talk about her show "Kourtney and Khloe Take Miami", the 31-year-old beauty said, "We're not trying, but we're not not trying."

And apparently, Kourtney hasn't revealed about her plan to sister Khloe Kardashian as Khloe's eyes bulged wide, demanding explanation. "What? What does that mean? So you're not ready to get married, but you're ready to have another baby?," Khloe asked.

Over Khloe's reaction, Kourtney explained, "Kim [Kardashian] and I are 18 months apart. We had the best childhood. It was so fun. Scott was an only child and I always say to him, 'Who did you play with and stuff?' It's just weird. I think Mason should have a sibling."

Then Khloe replied that she could give her nephew Mason playmate herself, saying "What about a cousin? If so, maybe me and Lamar will start sooner." Khloe and Lamar Odom married on September 27, 2009 at a ceremony held on the grounds of the home of music mogul Irving Azoff, a family friend, in Beverly Hills.