Inside the arena on Monday, Aug. 19, the star of the show made a surprise appearance, wearing a custom Chloe suit with a crisp lavalier blouse that retails for a cool $1,490 at Bergdorf Goodman. Just as brides are supposed to be the last member of a wedding party to be seen at the altar, presidential nominees usually don't show up to accept their party's nominations until the final night of the convention. But for Vice President Kamala Harris, the party threw out the playbook. She appeared onstage in Chicago on the first night of the Democratic National Convention and then livestreamed in from a barnstormed amphitheater in Milwaukee the following night. The tableau was pristinely produced for television. The crowds in both stadiums were relieved and effusive with their cheers. The first woman, black...