Waitress in London's West End was forced to cancel both of its performances today (January 11).
The hit musical said it had taken the "difficult decision" due to "illnesses in our cast".
A statement posted to the show's official Twitter account read: "Due to illnesses in our cast, we made the difficult decision to cancel both performances today, Sat 11th January. Our doors will re-open on Monday Jan 13th.
"Please contact your point of purchase to arrange a new date to visit us. We can’t wait to have you down at the diner 💗"
However proving that the show must go on - even if not quite as intended - members of the musical's company staged an impromptu concert version of the show for those that had tickets.
They shared on social media: "The Waitress company have decided to sing a few songs from the show in a concert version at 19.30pm, for any ticket holders who would like to stay for it.
"By staying to watch the numbers performed, patrons will not forfeit their refund/exchange, & will still be entitled to this."
Cast member David Hunter tweeted: "A strange day @waitresslondon made easier by our kindhearted company.
"A sincere thank you to our audiences for your understanding and bringing such high spirits to our little concert. x"
Based on the film of the same name, Waitress tells the story of Jenna a waitress and expert pie-maker who dreams of a way out of her small town and rocky marriage.
It was announced earlier this year that Waitress will close in London's West End on July 4 2020 before heading out on a first UK tour.
The Tony and Grammy nominated musical features a score by Sara Bareilles with a book by Jessie Nelson and direction by Diane Paulus.