Bridges is a terrific actor, but, putting it mildly, he's miscast in the Doris Day role. And Streisand is a terrific presence, but also a performer who never forgets who she really is. Since she directed, co-produced and wrote Mirror's love theme, she is not about to let us forget it, either. In short, the fine feathers of a star we all know to be a strong, smart and sexy woman keep peeking through her ugly-duckling getup. This spoils whatever suspense this story might hold, and most of its humorous potential too.
Unacknowledged vanity is ever the enemy of comedy.
And, come to think of it, of romance as well.