Making her way out of a chauffeur-driven car, the star's dress ended up coming apart, meaning her lady parts were on show for all to see.
Mirren despite a regrettable scene in which she spoofs her habit of playing queens does slightly less mugging than the Americans, which is a relief, and Anthony Hopkins manages at least not to be too annoying as the scientist who designed Nightshade and is now, for a super-genius, surprisingly lax about keeping track of his prize creation.
Which is the hallmark of every great songstress.
Obviously proud of her figure, Susanna has never shied away from tight-fitting dresses.
Although she has shortly come to be a familiar small-screen face in her homeland, appearing on long-running series such as East Enders and Clocking Off.
Take a peek through our gallery of full buff moments to find out.