Lamar Odom told wife Khloe Kardashian that he is jealous of her sister Kourtney's pregnancy, as they have been trying for a baby for the last two years.

32-year-old Kourtney announced that she and longterm boyfriend Scott Disick are expecting a second baby. The couple are already parents to two-year-old Mason and it seems Kourtney's luck in getting pregnant again has rubbed Lamar up the wrong way.

In a preview of an upcoming episode of Khloe and Lamar, the reality star asks the Dallas Mavericks player if he is "jealous" of Kourtney's pregnancy news, saying: "Yes, they get to have another baby and I don't."

Earlier this month, Khloe was forced to deny that she had opted for IVF treatment to conceive her first child, insisting that she is still trying the natural way.

In the meantime, Khloe seems happy to play step-mother to Lamar's two children from a previous relationship and were spotted recently cheering him on at a basketball game. Check out the pics in the gallery below.

Khloe Kardashian hangs with Lamar Odom's children during basketball game...