Will she or won't she?

That's been the question Glee fans have been asking over the last few weeks, as the show has confirmed a Britney Spears-themed episodes - but remained quiet about whether or not the singer herself would appear on it.

On Ryan Seacrest's radio show this morning, though, creator Ryan Murphy put to rest any doubts, saying Britney is 100% "going to be on the episode," likely as the dental assistance to John Stamos' character.

"The Britney episode is so reverential about her and so kind and it's about her music and it's not about her personal life," Murphy said. "And I think, Britney Spears is pop culture, and I think she's been through a lot. And I want to do something that just sort of says, you know what, 'thank you for what you have done.'"

Britney Spears has Tweeted this photo of herself on the Glee set.

As this spoiler pic proves, Lea Michele's Rachel will clearly play a role in a rendition of "Baby One More Time." As for the other tribute songs?

Tune in on September 28 and find out!

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.