The past tense of "to dress" is "dressed".
Its origin comes from the Old Engpsh word "dresse", which means to put on clothing.
Examples:
Yesterday, she dressed in a red dress.
昨天，她穿了一件红色的连衣裙。
The children dressed themselves before they went to school.
孩子们穿好衣服去学校。
He dressed himself quickly because he was late for the meeting.
他快速穿衣服，因为他迟到了会议。
Note: In Engpsh grammar, the past tense of a verb is used to describe actions that have already happened in the past.