What is considered beautiful varies, but there are certain traits which have been identified as beautiful by nearly all humans. It has to do with facial symmetry and measurements along the face. It's math, essentially (wouldn't you know the damn engineers would develop a formula for beauty!!!). Google it. Having said that, what cultures view as beautiful for traits which occur below the face (or in the ears, etc.): now that's a different matter.
It would have been far more odd if no references to physical beauty were found in the bible. As much as we may want it to have been god's word, it isn't and never has been. It's one people's spin; that's all. IMHO, the sooner everyone can accept this the better they will be emotionally, psychologically, socially and evolutionarily.