Kourtney Kardashian did NOT wanna talk about step-sister Kylie Jenner's reported pregnancy Saturday when she was out and about shopping with daughter Penelope. But that didn't stop us from asking! And asking and asking!

The mother-of-three hit tony Melrose Place for a $7 coffee and some shopping with her daughter and bodyguards. While the rich, hip kids of WeHo gawked as Kourt walked by with her entourage, our pap tried his darnedest to get even one word out of Kourtney about Kylie being with child, but she wasn't having it.

Kourt's got paternity problems of her own as baby daddy Scott is off cavorting with teenager Sofia Richie in Miami and who knows where else. How does it feel to have your ex dating a girl half your age? Uh ... gross