The Callaway sisters are back and better than ever.
Liz Callaway, Christina Bianco, and Ann Harada are also scheduled to perform.
Previously announced participants include Broadway veterans Sierra Boggess, Liz Callaway, and Beth Fowler.
The annual gala will take place on Monday, Dec. 9.
With performances by Minnelli, Nick Adams, Norm Lewis, and more, fun was had by all.
The songwriting power couple launched their 54 Below cabaret series with some of their closest Broadway pals.