The musical also welcomed a host of other alums to mark the milestone occasion.
Bebe Neuwirth, James Naughton, Joel Grey, and Ann Reinking will celebrate by making cameos in tonight's show.
Anjellicle Cats Rescue's 5th annual cabaret fundraiser takes audiences to a night at the old Meowlin Rouge.
Ann Reinking, Bebe Neuwirth, James Naughton, and Joel Grey will reunite for the Kander and Ebb musical's record-breaking performance.
Plus the Glee-ful gyrations of Lea Michele and Kate Hudson.
The two-time Tony winner will rejoin the cast for the third time as Matron "Mama" Morton.
The new off-Broadway musical also stars Paul Anthony Stewart, Julia Murney, and Frankie Seratch.