Kim Kardashian Reveals North West's Best (And Worst!) Babysitters

Kim Kardashian has more than a few helping hands when it comes to taking care of her daughter North West. But who deserves the title of best babysitter of all?

"Khloe," Kim revealed on Jimmy Kimmel Live.

When asked who the least trustworthy is, the new mom confessed the answer would have to be Rob, explaining that her 26-year-old brother had recently failed to keep a babysitting appointment.

Khloe may be a natural with kids, but according to the same interview, the sister lied about struggling to get pregnant with now estranged husband Lamar Odom.

"For so long everyone in our family was feeling really sad for Khloe thinking that she wasn't getting pregnant and everyone around her was," Kim said. "And the whole time she wasn't trying to and she was not showing up to these doctor appointments behind our back on purpose."

At one point, big sister Kourtney even offered to be a surrogate for her sister after Khloe expressed frustration regarding the subject on Kourtney & Kim Take Miami.

"About a year ago, we were both like, 'Let's just see what happens,'" Khloe said on the program. "And then when it didn't happen, Kim was like, 'Let's go to the doctor.' And I found out I don't ovulate and now my uterus lining isn't thick enough and I have to take pills to make my uterus lining thicker. And if that doesn't get thicker, I cannot carry a baby. It's just, sometimes it just doesn't happen."

But according to Kim's interview with Kimmel, Khloe "knew it wasn't right and she knew she wasn't ready so now we understand it. We understand her decisions and it's very clear."

Kim is currently planning a June wedding in Paris with rapper fiance Kanye West.