Khloe And Kim Kardashian's Relationship On The Rocks Over Baby News

It's no secret that ever since she tied the knot with Lamar Odom, Khloe Kardashian has been more than a little baby crazy -- although, she has yet to make any big announcements. But now that her sister Kim has said 'I Do' and Kourtney already has one adorable little one, Khloe is reportedly feeling the pressure to add to her own family.

"There is some friction now because Khloe knows [Kim's pregnancy] is the next step and she feels terrible she can't get pregnant herself," a friend of the reality star told Us Weekly.

Earlier this year, after rumors of a pregnancy began to circulate, Khloe confessed that although she and Odom were trying to conceive she was not, in fact, pregnant -- not for a lack of trying. And she hasn't been shy about her less than expedited path toward pregnancy, Khloe's fertility difficulties have been showcased on the family's show, "Keeping Up with the Kardashians."

But this "friction" could be ignited sooner than expected -- Kim hasn't been shy about hinting that she may be eating for two. The newlywed has recently been tweeting about a slew of new "cravings."

But Khloe may have a new distraction to keep her from thinking of her reported baby woes. What's her new pet project? Making brother Robert Kardashian a 'Dancing with the Stars' champion.

"When I’m back in L.A. I’m going to be driving him to and back from rehearsals to make sure he takes this seriously," she told HuffPost Celeb. "This is a huge opportunity.”

Although reports of this baby "friction" between the siblings may have some merit due to Khloe's very public feelings about adding to her family, we're sure that the Kardashian sisters couldn't be happier for one another if and when baby news hits the presses.

Click over to Us Magazine for more on Kim and Khloe's baby battle.