Revealing mistake: When Tallulah and the girls are acting in the Fat Sam's Grandslam song look at Tallulah as they sing the 'Ra da da da da da' bit. She looks straight into the camera.
Continuity mistake: John Norman (Kris Kristofferson) and Esther Hoffman (Barbra Streisand) are sitting at the table talking. John opens a bottle of wine and every time the shot faces John the cap is on, but when the shot faces Esther the cap is off, over and over again.
Factual error: In the scene where Cinderella is in her new room at the Prince's castle, the roses prominently displayed in the foreground are brightly coloured Hybrid Tea roses (the pointy ones) which were not bred until the early 20th Century. In the 1700s (panniered skirts and powdered hair) the roses would have been of looser formation, with softer colours, e.g pink or cream cabbage roses. (These roses also appear in later scenes.)