"American Idol" dominated U.S. television on its first outing but lost millions of viewers despite the addition of celebrity judges Jennifer Lopez and Steven Tyler.

Some 26.1 million Americans tuned in for the 10th season premiere of the singing contest, down 13 percent on last year's opening show when nearly 30 million watched, according to Nielsen ratings data on Thursday.

The numbers still crushed all other programing on Wednesday night. But after weeks of hype and curiosity over what producers called "a new era," the numbers boded ill for hopes of restoring sparkle to the aging show and reversing a four years ratings slide. About The Author: Steven Rogers
Steven Rogers is a senior entertainment reporter for Reality TV World and been covering the reality TV genre for two decades.