She breezed into last night's after party at the Plaza in Manhattan after winning her sixth Tony for her role as Billie Holiday in "Lady Day at Emerson's Bar & Grill,".
Reporter: "So when you heard your name announced, What went on in your head?"
"I had a break down. I had a break down. I literally hyperventilated and had a break down that continued off stage when they lead me off stage actually," MacDonald says.
The after party is Broadway's biggest celebration. It’s where stars come to unwind after an evening filled with more excitement and drama than any Broadway production.
James Monroe Iglehart won best featured actor in a musical for his larger than life portrayal of the Genie in Aladdin.
"It was like a whirlwind. Its going in fast motion and slow motion at the same time," Iglehart admits. "I was like I gotta get everything out but I hope I don’t forget anybody and my brain kept going 'you just won a Tony. You just a Tony'."
Jefferson Mays from "A Gentleman's Guide to Love & Murder," says his feet still haven't touched the ground after his show won best new musical.
"I am floating on a cloud of euphoria with such joy for our musical. this little musical that came out of nowhere."
See full list of winners http://www.cbsnews.com/news/tony-awards-2014-winners/
For stars, the party was a much needed chance to unwind before many jump right back into their broadway characters.
Broadway producers had a lot to celebrate as well this year. Box office sales hit a record high this season and attendance is up almost 6 percent.
(Marlie Hall, CBS News)
Copyright 2015 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.