Kim Kardashian revealed how her four children keep her grounded with their candid comments - including asking about her plastic surgery plans. During the Thursday, December 11, episode of The Kardashians, Kim, 45, documented her morning as the mom of North, 12, Saint, 9, Chicago, 7, and Psalm, 5. "Everything I do is for my kids," noted Kim, who shares her children with ex-husband Kanye West. "And they always do ground me. Anytime I need a reality check [or] anytime I need to be so humbled, I just go home." Kim offered examples of what her kids have told her. Kim K.