Khloe Kardashian, Lamar Odom trying to get pregnant, says Rob Kardashian

Little Mason may not be the only Kardashian baby for long.

Representing the Y-chromosome in the Kardashian clan is baby bro Rob, who is spilling on big sis Khloe's baby plans.

According to Rob, Khloe and husband Lamar Odom "are trying."

"It's a tough process," Rob explains to People. "It's not as easy as people think... It should happen soon, I'm hoping."

Let us guess -- their upcoming E! spin-off, "Khloe & Lamar" will document their struggles (or non-struggles) with getting pregnant and preparing for baby. Incredibly predictable? Yes. Are we complaining? No.

As for Rob's future niece/nephew, he says the baby will "be a tall, beautiful person."

No arguments there.