Subdued sartorial and acting codes

Hi,

I have difficulty in understanding the bracketed sentences and phrases. Could anyone do me a favor?

(The newsreader or news anchor is a special kind of star supported by subdued sartorial and acting codes that convey sincerity. )Taken to an extreme, this can lead to ('Ken and Barbie' journalism)celiwhere the charge is made that physical attractiveness of the anchor team is taking precedence over their competence as journalists.

Thank you.

The news reader or (in the U.S.) anchor wears conservative clothes and acts in a way to make the viewer have confidence in him or her. What the TV person wears and how he/she acts is more important than actual journalistic ability.