Block previously played the role when she filled in for Foster last fall. Among Block's many other stage credits are 9 To 5: The Musical, Wicked, The Pirate Queen, The Boy From Oz, and By the Way, Meet Vera Stark.
Directed and choreographed by Kathleen Marshall, the show features music and lyrics by Cole Porter; original book by P.G. Wodehouse & Guy Bolton and Howard Lindsay & Russel Crouse; and a new book by Timothy Crouse and John Weidman.
The creative team includes Derek McLane (scenic design), Martin Pakledinaz (costume design), Peter Kaczorowski (lighting design) and Brian Ronan (sound design).
In related news, it has been announced that Joel Grey will continue in the production, playing the role of Moonface Martin through April 29.