The Heart Truth's Red Dress Collection Fashion Show

Heidi Klum

showed everyone just how it's done when she stormed the runway at The Heart Truth's annual Red Dress Collection fashion show. Klum (in Marc Jacobs) joined celebrity models like Sara Ramirez, Maria Menounos and Joss Stone to raise awareness about the dangers of heart disease for women. Each wore a one-of-a-kind red dress created by one of fashion's hottest designers. "I was late today, so I literally grabbed the dress, popped it on and that was it," said the seasoned supermodel, who will also wear a red dress-designed by John Galliano-to the Oscars in an effort to continue raising awareness about the issue. The heart-pounding show left the audience inspired to join the fight.

-Bronwyn Barnes

There was little doubt that Sara Ramirez would look spectacular in her Angel Sanchez gown-turns out she'd worn it before. Well, sort of. "Angel did my dress for the SAG awards and I knew he had also made the same dress in red," explained the lovely Latina. "So I asked if he would be kind enough to donate it to the cause and he agreed."

No stranger to the catwalk, Molly Sims jokingly sized up her fellow strutters from the makeup chair. "I’ve had some good experience, but is Heidi amp#91;Klumamp#93; here?" Sims asked. "Heidi's had the most experience, but I’m a close second!" Sims opened the show in a dress by Daniel Swarovski that glittered with 94,000 red Swarovski crystals.

"I wasn't nervous," said singer Ashanti, who paired a set of red eyelashes with her Tracy Reese frock. "The energy was really good in the room and the audience was having a good time."

Jenna Fischer

left The Office long enough to show off an elegant gown by Carmen Marc Valvo. Fischer's personal strategy for a clean runway walk? Put one foot in front of the other. "I manage to walk from one place to another all the time, so I'm just going to concentrate on that," the actress said backstage before the show.

"Last night I couldn’t sleep a wink I was so excited," gushed Ana Ortiz, who wished Joss Stone (in Max Azria Atelier) luck before making her way to center stage. While Ortiz (in Badgley Mishka) admitted to practicing at home and watching episodes of America's Next Top Model for tips, Stone had her own recipe to avoid tripping up-true to form, the singer skipped the shoes and walked barefoot.

Fresh off a flight from Phoenix, Arizona-where she's covering the pre-Super Bowl festivities- Access Hollywood correspondent Maria Menounos (in Marchesa) had two secret weapons on hand to help her look rested: "amp#91;My makeup artistamp#93; Michelle and Dunkin Donuts coffee! It's a pretty simple fix," Menounos said.

Lisa Rinna

showed off her flirty Michael Kors frock with a shimmy and a shake, prompting whistles from the audience. Mary Lynn Rajskub, Rita Moreno and Camryn Manheim also grooved to heart-themed tunes like "Heart of Glass," and "Owner of a Lonely Heart" as they took their turns on the catwalk.

Legendary performer Liza Minnelli (in Halston) had the crowd on its feet by the time she hit the final words of "New York, New York," ending the show on a high note.

"Nothing draws attention like a little red dress," said First Lady Laura Bush, the Heart Truth's national ambassador, though she wore white to the occasion. The annual Red Dress show marks Wear Red Day, the kick off to American Heart Month.