Earlier this month, Kim, 33, told ET that she and husband Kanye West, 37, are trying for baby No. 2 after welcoming daughter North West last year. She explained to the daytime talk-show host why she's hesitant to have a big family like the one she grew up in.
"I just went to San Diego to give my pregnant sister [Kourtney] a break," said Kim. "I took care of my niece, nephew and my daughter. To bathe them all, feed them, get them in the pajamas and down for bed I was literally like crying. It was so hard. Three kids. I don't know how my mom did it with six. It was really hard, so I'll go for two. But then again, I have so many siblings and I love it. They're my best friends. I would want that for my kids. So I'm going to do two and see how it is."
Watch the video to see Kim take the ALS Ice Bucket Challenge right on the Ellen stage!