It took a year and a half to secure permission to shoot the lavish dance sequence on Regent Street in London over four nights, as it's actually owned by the British royal family. Two nights before they were scheduled to film, after spending an entire week of rehearsal in a studio where they tape out the street,
Queen Elizabeth II passed away and the shoot had to be postponed. Everyone had to be paid anyway, including shops and crew, and production insurance didn't cover the losses due to death of a monarch, so the producers had to raise additions funds to shoot the sequence, which was filmed five months later.
