'Glee' Season 4 Details: Kate Hudson, Sarah Jessica Parker And More Spoilers Revealed

When "Glee" returns for Season 4 in September, it'll have an added dose of star power in the forms of Kate Hudson and Sarah Jessica Parker. But who will these two blonde A-listers play on "Glee"? TV Guide Magazine has the scoop.

According to TV Guide, Hudson will play a NYADA dance instructor. "Dance is not Rachel's strong point, but as a freshman it's a requirement class she has to take," Lea Michele said. "It will put Rachel in a very vulnerable place, stuck with a teacher who doesn't make it easy for her."

Meanwhile, Sarah Jessica Parker will play a "manager of sorts" to Chris Colfer's character, Kurt. However, it's not in the performance arena.

The addition of Parker and Hudson isn't the only change for "Glee" Season 4. "American Idol" runner-up Jessica Sanchez is reportedly in talks to appear in several episodes and many of the main characters will be "underdogs" again, according to series co-creator Ryan Murphy.

"Many of the characters will be starting over as underdogs, which is a good thing for the show," he told Vulture. "I really made an effort, talking to all the regulars about it."

Who's staying and who's leaving? Murphy said he gave the cast members the options to move on, letting them decide. All will be revealed when Season 4 premieres in its new timeslot, Thurs., Sept. 13, 9 p.m. ET on Fox.