Like Catherine de' Medici. Queen Elizabeth first wore this iron hinged armor like corset. It flatten the body, giving a smooth outline beneath gowns.
No doubt the corset was exceptionally uncomfortable and heavy to wear. The only benefit seems to be that the corset produced an incredibly small waist and elongated flat chested smooth line torso.
Eventually Queen Elizabeth opted to wear a softer corset made of leather or canvas, boned with wood or steel. Worn over the chemise, these corsets were lined with sheer silk and laced up the back.
Corsets of the late 16th century are more recognizable to us today than the iron versions. These later corsets incorporated materials such as whalebone, bone, wood and flexible steel. The patterns on the corsets showed the placement of the chosen support and were elongated after a fashion trend set by the boyish figure of Queen Elizabeth I.