Britney Spears Set To Appear On 'Glee'

Creator Ryan Murphy confirms to Ryan Seacrest that pop singer will guest star on tribute episode.

Lady Gaga: Check. Madonna: Check. "Glee" has featured the music of the pop stars to acclaim in its first season. Yet the show has yet to get high-profile singers Madge and Gaga to appear in person on the show. But another diva is about to change that.

On Tuesday (August 10), show creator Ryan Murphy confirmed to Ryan Seacrest that Britney Spears will make an appearance on "Glee." Now, fans are anxious to see what they'll do with the Spears discography in an episode set to air next season.

And the cast seems just as excited as the Gleeks about what's to come. Heather Morris couldn't wait to have Spears on set when MTV News spoke to her at the Teen Choice Awards on Sunday.

"I get to do Britney Spears! I'm hearing rumors from other people that she's supposed to be coming ... that'd be so nerve-racking," she said. "I like 'Toxic' the best or the 'Slave' video. It was always her best performance. She's rocking! I don't care what I do."

"I mean I can't really give away songs, but I know we've seen pictures of Lea [Michele] in a sports bra," Jenna Ushkowitz added, confirming online reports that Michele would sing the classic Britney tune " ... Baby One More Time."

"Some old Britney, some new Britney, some Brittany of our Brittany from the Glee club. So it should be funny," Ushkowitz teased of featured songs. "We're really excited. I love Britney Spears."

Fans also want to know whether Matthew Morrison will go all the way and shave his head as rumored for the episode. But the only thing he would confirm is that he couldn't confirm anything.

"All rumors," Morrison told us. "I think you might be surprised. I don't think I'll be performing any [songs]. I might sing a little bit of 'Toxic,' " he shared. "I'm not sure. We haven't really got too far in the script yet, which is why I don't know too much about the head-shaving thing."

Morrison's castmate Amber Reilly is already convinced the episode will be great.

"I can tell you it's going to be a really great episode and you're going to love it," she said. "And they're doing the big hits from Britney."

Which Britney songs do you think are absolutely essential to the "Glee" tribute episode? Tell us in the comments!