Heidi Klum on Why She's So Happy!

No one thought project runway would last, let alone change the face of fashion, but with its ninth season--ninth!--launching this summer, Heidi Klum has the life everyone wants: a great job, a thriving family and an adorable husband who worships at her feet. "Woo-hoo!" says Heidi. (That's a quote.)

Heidi Klum is seriously getting down. In between sexy poses for the Glamour cover shoot, the Project Runway host sings along with Missy Elliott like she's starring in a music video (which she's done, by the way, with her singer husband, Seal). Bopping around, smiling that famous smile, she just seems so…happy. And she's earned it. Not only is Klum, 38, heading into her ninth season of hosting Runway, but she's now a designer in her own right. She's about to launch an QVC jewelry line, Wildlife, as well as a Coty fragrance, Heidi Klum Shine. Then there's a New Balance partnership, two maternity lines and a new AOL lifestyle channel, on which she doles out advice and shopping recommendations. Oh, and she does it all while apparently having plenty of hot sex, even after six years of marriage (details below!) and four kids. In one of the few times she actually sits down during the day, Klum, dressed for her last shot in glitter pants and sexy heels, relaxes on the couch popping handfuls of red grapes into her mouth, her legs splayed open like a guy's. Then she dishes on everything from bedroom fashion to Runway.

GLAMOUR: Let's talk clothes. If you could wear only one outfit for the rest of your life, what would it be?

HEIDI KLUM: Hmm, maybe my pajamas? I have a whole army of pajamas.

GLAMOUR: And does Seal like your pajamas, or does he prefer you in lingerie?

HEIDI KLUM: He loves pajamas! He's very English, so he loves pajamas and slippers…. We start off wearing the pajamas, and sometimes they come off!

GLAMOUR: Wait, wait, I've got questions on that later! But Project Runway first. Over the seasons, it seems like your critiques have gotten more forceful. Do you agree?

HEIDI KLUM: I don't think so. But I do think that I'm more comfortable now than I was during the first few seasons. Now I'm more at ease. I see the designers and start singing this song [snapping along], "Another one bites the dust…." I have more fun with it now.

GLAMOUR: Has Tim Gunn ever given you style advice?

HEIDI KLUM: He hasn't. He's so polite—he would never say, "Why are you wearing this?" Michael [Kors] is a little bit more…well, he always jokes with me. He says that my skirts are really short. He calls it fallopian length. He teases me.

GLAMOUR: After so many seasons of the show, how do you keep it fresh?

HEIDI KLUM: It's really about the specific designers…. Of course, some seasons are better than others. One thing that's stayed the same is that we eat a lot of Cheetos! We all have orange hands, though you can't really tell on Michael, because it blends in with his tan. [Laughs.]

GLAMOUR: How much longer do you think the show will last?

HEIDI KLUM: I'm going to be 80, walking with a stick down the runway.

GLAMOUR: You're known for your bold fashion sense. What was your worst misstep?

HEIDI KLUM: I can't think of one that I hated. It always worked in that time and that moment. It's the same with hairdos. When I was younger, I had a perm, and it was really big. My mom was a hairdresser, so even my dad had a perm! I looked like a poodle, but it was cool at the time.

GLAMOUR: Is there anything that you're bad at?

HEIDI KLUM: There are many things! I'm bad at baking. I'm bad at letting go of things. I'm probably bad at reading.

GLAMOUR: Bad at reading?

HEIDI KLUM: Yeah! Sometimes I'm like, "What is this word?" And I start stuttering, and Leni [Klum's oldest daughter] is like, "Mommy, you don't know what that means?" And I'm like, "No, do you know what this means?" And she says, "No, but you should know. You're the mommy."

GLAMOUR: You and Seal renew your vows yearly. What's the story behind that?

HEIDI KLUM: Well, my husband and I had a great time at our wedding. And I said to him, "It's too bad that when we're 90, we'll have only this one time to look back on. So we should do this every year!"

GLAMOUR: You also go all out for Halloween….

HEIDI KLUM: I think putting on a costume loosens people up. Put on a wig, and all of a sudden it's like, Woo-woo! To me, life is about creating memories. The regular days kind of just blend in. You have to create special times so that you will always remember them.

GLAMOUR: I read that you actually asked Seal out first.

HEIDI KLUM: Yeah, I did. We were sitting in the lobby at the Mercer Hotel [in New York], and he came in from the gym. I was very attracted to him immediately. And I said, "Where you going? You should just stay here with us." He said, "I'm sweating—I have to go take a shower." And I'm like, "Good, take a shower and come back." And he did.

GLAMOUR: In relationships, were you usually the aggressor?

HEIDI KLUM: I'm not someone who plays hard to get. This whole thing about "Oh, let's exchange numbers" and then people wait four or five days before they call you? I don't see the point. If you feel something, why would you let that pass? You only live once.

GLAMOUR: Is there anything about Seal that you'd like to change?

HEIDI KLUM: No. I learned [not to try] from my previous marriage—I was married for six years [to hairstylist Ric Pipino]. Seal is a very strong person, and so am I, and we let each other live our lives.

GLAMOUR: Have you ever been hurt by a guy?

HEIDI KLUM: Between my ex-husband and my husband, I met someone I really liked, but it turned out that he was lying to me. That really hurt. But now I look back and think, Was I crazy? Why was I crying over this stupid dude?

GLAMOUR: The "Secret" video [which features Klum and Seal on a bed…wearing nothing] is beautiful. What was it like to make it?

HEIDI KLUM: I had no problem having fun with my husband, but he was shy. When we were there in the bed, he was like, "Everyone has to go! I don't want to be naked with everyone watching!" For me, it's like, Woo-hoo! I don't care.

GLAMOUR: What's the one piece of lingerie you think every woman should own?

HEIDI KLUM: There's nothing wrong with a nice garter belt. I'm not saying you have to put a pole up in your bedroom and start swinging off the rafters. But I love that sometimes! My husband and I just had a "sexy week" in London. I'd put on a super-short skirt with a garter belt on underneath so that when I'd sit, he could see it. It's fun to sauce it up a little bit.

GLAMOUR: When do you find Seal the hottest?

HEIDI KLUM: Always. He's even hot when he's sleeping. He's a beautiful man. He's kind, he's a gentleman, and I watched him last night onstage, and he still rocks it. I'm like, "Yeah, that's my man!"

GLAMOUR: And is there a look he loves on you?

HEIDI KLUM: I got compliments from him last night. I had a fallopian-length dress on, like Michael says. And it was actually designed by Michael Kors! I was shocked, and I need to call him and tell him that he did fallopian! He copied my signature length.

Additional reporting by Jessica Duncan

So How Does She Get That Body?

Four babies in, she still looks like a supermodel! It's not voodoo; it's strength-training. Heidi does toning moves like lunges, step-ups and rows for her arms and back, plus lots of belly-targeting exercises. "As girls, we all have the same issues: the stomach, the love handles and the thighs," Klum tells Glamour. As for cardio? She swears the majority comes from chasing after her kids. Another key to Heidi's figure, however, is diet—eating as few foods that come from a bag or a box as possible, and getting lots of fresh veggies, with her own home-cooked German meals sprinkled in. A girl's gotta live a little!