The empress was not impressed.

The empress is visiting Australia.

Tom impressed the empress.

Empress Dowager Cixi held control in China for forty-seven years.

An ancient city totters to her fall, / time-honoured empress and of old renown; / and senseless corpses, through the city strown, / choke house and temple.

The empress decided to stay out of the power struggle going on. She knew that her position was secure, no matter who won.