Video: Celebs Light Up the Runway in All-Star Fashion Show

ET was there as Kristin Chenoweth, Kim Kardashian, former "American Idol" champ Jordin Sparks and many more walked the runway in red dresses created by America's top designers at the Heart Truth's Red Dress Fashion Show in New York on Thursday night -- and the stars also reacted to former President Bill Clinton's health scare.

"It's so amazing to be part of something that is spreading awareness about a serious issue [heart disease], but at the same time we get to do it fun," said Jordin, who noted that her great grandmother passed away from heart disease about two years ago.

"I'm honored to be here to walk in the show tonight," said Kim, who added that she's enjoyed the whirlwind last few weeks leading up to her boyfriend Reggie Bush's big Super Bowl win.