Company has extended its run in the West End until March next year.
Marianne Elliott’s gender-swapped production, which stars Rosalie Craig and Patti LuPone, opened at the Gielgud Theatre on October 17 and had been booking until December 22.
Tickets are now on sale until March 30.
Stephen Sondheim and George Furth’s musical also stars Mel Giedroyc, Jonathan Bailey, Richard Fleeshman and Alex Gaumond.
It is produced by Elliott and Harper Productions, Catherine Schreiber, Grove Entertainment, Jujamcyn Theaters, LD Entertainment, David Mirvish, Aged in Wood Productions/Ricardo Hornos, Bob Boyett/Tom Miller, Bruno Wang Productions/Salman Al-Rashid, Across the Pond Theatricals/ Trio Theatricals and Greek Street Productions/Christopher Ketner.