Most Attractive Female Vocalists

Based on what?
My daughter booked her for a Cambridge Uni student talk...She accepted (as had many others for example Bill Gates, George Takei, John Bercow, Judge Judy) All of them were fine - of the 21 guests she invited Dua Lipa stood out as a Diva, and worse rude and dismissive of any of the students.

She was not a popular speaker.