Christie Brinkley wowed fans waiting outside the Good Morning America studio in New York on Wednesday.
Showing off her amazing-for-any-age figure she slipped into in a skin-tight, red hot Herve Leger number.
In a recent interview, the fifty-seven-year-old former supermodel declared, "I can't believe my age.
"I mean, I look at that number and I'm like, you know what? Nuh uh. I just can't- the number doesn't fit."
Christie, who was once married to musician Billy Joel, is now singing and dancing on Broadway in her latest venture.
She's starring in the lead role as Roxie Hart in the musical Chicago.
Once seen dancing in the video for Billy Joel's 1983 hit single Uptown Girl, the timeless beauty says that rehearsing for the musical has helped her keep her slim figure, and that she's having the time of her life up on stage.
Photo: © Rex