EXCLUSIVE: Chelsea Clinton Defends Mom Hillary: 'I Don't Remember a Time When She Wasn't Being At…

Because we're in Hollywood, a lot of stars have stepped forward to speak up for you, to hold fundraisers, to raise money. Is there anyone who still gets you starstruck? Oh my gosh. When George Clooney and Amal did that event for me at their home, I was starstruck. I mean, obviously, I'm a huge fan of George's, and I hadn't yet met Amal, but I knew people who knew her because she is a human rights lawyer, which I am enthusiastically impressed by. So the idea that they were going to do this, and then we got to spend some personal time together, that was pretty starstruck-y time. It was amazing, huh? It was. It was great. It was just terrific. Did Mrs. Clinton just get all twinkly-eyed there? Well, it's okay, because George had that same totally smitten look at her back in 2003. Actually, lots of stars have sort of a crush on Hillary, but no one more than Katy Perry. Katy Perry wore that t-shirt now that you can buy that Hillary Clinton is a badass. How is your mom a badass? Well, how much time do we have, Kevin? I'm just in awe of her strength and her grace, and I hope that my daughter Charlotte and her future little sister, little brother, feel the same way about me someday that I feel about my mom. That's right. Chelsea's about to be a mom again. I just get more and more pregnant, Kevin. It's not just inevitable. 19-month-old Charlotte is going to be a big sister. Will you even put a nursery in the White House? Oh, my gosh. Of course. Easy question. I am thrilled that Charlotte recognizes me, calls me grandma. They'll FaceTime me. Every day. She asks about her grandma every day. So will you FaceTime? Oh, we do. Oh, my gosh. Oh, yes. Most days. It's intended for grandparents, Kevin. I'm convinced of that. Chelsea and Mark would video Charlotte, and when she was really little, they would make a sign which would say, good luck, grandma, right? And then it was her animal noises, so she could roar like a lion. It would say, you know, Charlotte, roar like a lion for your grandma, and she'd go, roar. That's right. It's interesting. We've watched this mother-daughter duo really change over the years. Hillary has definitely evolved her look, and Chelsea, well, she's gone from tight curls to straight and chic. But here's the big question. How do they handle the haters? For better or worse, I don't remember a time when she wasn't being attacked by people. I'm more concerned about how I'll explain it to my daughter. How will you? She isn't so aware, but she's becoming more aware. And so I'm more focused on that because I know my mom can take care of herself. But did you know Hillary's toughest critic was actually her mom? Sadly, Dorothy passed away in 2011, about a year and a half after Chelsea said, I do. This is at your wedding, but it's with your mom. And your mom raised you to do great things and to do your best. Right, right. But right now, how proud would she be? She would be excited. She'd be very proud. But she'd also still be giving me advice. Would she? Oh, absolutely. Oh, my goodness. I'm not sure you should have said that, or did you really need to wear that? Once a mother, always a mother.