McCarthy (Side Show, Urinetown, The Pirate Queen) will be joined by young actress Tori Feinstein ("30 Rock," "Sesame Street") as Cindy-Lou Who in a cast that also features Ken Land as Old Max, Gilbert L. Bailey II as Young Max, Paul Aguirre as Papa Who, Natalie Hill as Mama Who, Philip Hoffman as Grandpa Who, Rosemary Loar as Grandma Who, Danielle Megan Johnson and Zara Scott as Annie Who.

The ensemble will include William Bailey, Jamie Beth Barton, Alex Chester, Matt Densky, Anoinette DiPietropolo, Amy Griffin, Jamey Hood, Liesl Jaye, Dennis Kenney, Ivory McKay, Candice Nicole, Shane Rhoades, Anette Michelle Sanders, Jamison Stern, Heather Tepe and Lilly Tobin.

The stage production is based on the original book written by Dr. Seuss and was originally conceived by three-time Tony Award winner Jack O' Brien. Book and lyrics are by Timothy Mason with music by Mel Marvin and additional music and lyrics by Albert Hague and Dr. Seuss.

Matt August will direct the production that will be choreographed by Bob Richard based on the original choreography by John DeLuca and originally created by Tony-winning director O’Brien. 

The Grinch was previously seen on Broadway in 2006 and 2007 and made its Los Angeles debut in 2009. It will play MSG Dec. 13-30 as part of a holiday tour that will also play Hartford, CT (Nov. 20-25), Richmond, VA (Nov. 27-Dec. 2) and Chicago, IL (Dec. 5-16). The production will feature new sets designed specifically for the Theatre at MSG. 

Dr. Seuss' How The Grinch Stole Christmas! The Musical features the beloved songs "You're a Mean One, Mr. Grinch" and "Welcome Christmas" from the original animated TV special. Max the Dog narrates as the mean and scheming Grinch, whose heart is "two sizes too small," decides to steal Christmas away from holiday-loving Whos of Whoville.

For tickets visit theateratmsg.com/grinch.