Priscilla was the first to perform and sang "We Belong," from the musical, led by the show's star Nick Adams. Adams raised $20,000 for the cause and planned to participate in the walk to show his support.

"I just got the word out there," Adams told Playbill.com at the conclusion of opening ceremony. "A lot of [LGBT] websites picked up that I was going to be walking and collecting donations. Also, with the help of Priscilla, I [was able to offer] backstage tours to people with donations of $500 or more who came to see the show, so I am just overwhelmed with the response that I got and I am so happy to be able to contribute such a large amount."

McDonald concluded the ceremony with the AIDS Walk anthem, "You'll Never Walk Alone," from Carousel. The actress, who will soon be appearing in American Repertory Theatre's production of Porgy and Bess, went to show her support with her daughter, Zoe, until it was time to leave to attend her daughter's soccer game.

Porgy and Bess recently had an industry performance in NYC and is speculated to come to Broadway this fall. Although an official announcement has not yet been made, McDonald told Playbill.com about the joys of playing opposite her friend of 20 years, co-star Norm Lewis.

"It's a good stretch for him," said McDonald. "He's such a beautiful man and to see him playing this character—he's just fantastic. I cry every time we sing together."

To watch Priscilla's performance, look below:

To watch McDonald perform, look below: