wear the trousers idiom UK informal (US wear the pants)
（尤指女性）掌权当家，占主导地位
(especially of a woman) to be the person in a relationship who is in control and who makes decisions for both people
Blake may seem bossy, but it's Lisa that really wears the trousers in that relationship. 布赖恩可能看起来比较专横，但我告诉你，他们两个中真正说了算的是莉萨。