In this particular screenshot of Elizabeth Taylor as Cleopatra, she is entering Rome and putting on a show that stunned the Romans. Marc Antony even said "Nothing like this has come to Rome since Romulus and Remus". In this shot, the camera angle is aimed upwards giving Cleopatra the look of being above everyone else. After such a grand introduction, it is clear that Cleopatra is very regal and her style choice demands the attention from everyone around her including Caesar and Antony. Earlier in the scene she walks down from her throne which is elevated well above ground level so everyone in Rome can see her marching with her parade. She is dressed in an all gold outfit that is supposed to resemble the Egyptian goddess Isis. The sunlight is shining off of her outfit giving the illusion she is glowing. I believe the message of this scene is that Cleopatra has come into Rome with a chip on her shoulder. She is trying to show power and grandeur to win over the Romans opinion's of her.