Weird science

There was recently a story all over the news that couples who are more attractive are more likely to have daughters than sons, because it is evolutionarily more beneficial for women to be attractive, and therefore women are getting more beautiful over time.

There's a flaw in that theory:

With the exception of some esoteric cloning science that isn't yet being used on humans, every woman who is born has a mother and a father. Women, and therefore mothers, are getting more beautiful, but the study says nothing about men, so we must assume that they stay the same.

The conception process does nothing to ensure that the baby will receive the most attractive of its parents' genes. The baby receives a random sampling. There is nothing to make the baby receive the best of the available genes. (I'm proof of that! Except for my eye colour, I'm the worst of both worlds.) So even if the parents are attractive, the babies are just as likely to inherit unattractive characteristics from their fathers (who are not growing more attractive) or their less-attractive ancestors.