United Kingdom, Aug. 4 -- Ariana Grande's exit from the London production of Sunday in the Park with George has reportedly left theatre bosses in a "terrible mess".

The 33-year-old pop star had been due to lead the cast of Sunday in the Park with George alongside her Wicked co-star Jonathan Bailey at London's Barbican Centre next summer but she has confirmed she's pulled out of the show and is planning to take an extended break from work.

However, the Daily Mail newspaper reports Empire Street Productions - the company producing the stage show - was told about her decision just an hour before the public announcement and her departure has left them scrambling to keep the project on track.

A source told the publication: "There have been ...