I agree with Explodey, however, and I may not have any prime examples, there actually pop artist who have talent, but the company packages them to be a certain way. Almost like selling a piece of your soul to fashion and another piece to the media. You wanted to be a singer, now pay the price that comes with it.
But yes, If I'm going to pay a hundred dollars for a ticket, I would want them to be attractive. Though it souds vain, actually it is vain, thats just the way things are. Of course it has something to do with the culture that makes people this way. In Japan cute and bubbly is what sells. In America sex and vulgarness sells. Also showing some skin. You also have to have a song about love otherwise you're not going to go far. In Korea, most groups are pop and R&B with many interesting colors and fashion choices. However, even with their interesting fashion choices, I couldn't compare them to American artists, sch as Lady Gaga.