The former supermodel took on the lead role of Roxie Hart in the Broadway prodution, at the age of 57 (yes, believe it or not, this woman is 57!)
The role has most famously been played by the more youthful starlet, with the likes of Brooke Shields and Michelle Williams having stepped into her tap dancing shoes.
Looking remarkably younger than her years, Christie hit the stage in serious style, sporting a micro-mini LBD and tailored tux jacket, teamed with Roxie's iconic vintage curls and a bold red lip.
And the mother-of-three's performance seemed to go down a storm with the audience at the Ambassador Theatre, who awarded her efforts with a standing ovation.
Christie was then presented with a bouquet of flowers on-stage by Alexa Jay Joel - her daughter with musician Billy Joel.
Bravo, Ms Brinkley!