"Rather than ask whether Cleopatra was beautiful, a question that cannot be answered in any event, one should ask whether she was desirable."
Clearly, due to the legacy of her charmingness and communicative powers, the answer to that is yes. Since "beauty" is a social construct that is somewhat impervious to even objective analyses, I doubt that any analysis of ancient sources such as busts or anecdotal accounts could be accurate. We know that eye-witness testimony is inaccurate and unreliable today, therefore why should we trust it from ancient times? Well, it's the only source available, which is both a good and bad excuse. In the end, I think it's sufficient to say: Cleoparta certainly had a profound effect, whether or not that was due to her beauty, her charisma, or if mythologized. She has entered the public consciousness and is unlikely to leave it.