RT@adamlambert: I'm so excited!! @MrRPMurphy: I am thrilled to announce that the super talented Adam Lambert is joining the cast of Glee this fall.

Above from Adam's twitter account. Several news organizations are now reporting the news as well.

Just when I was about to give up on GLEE, we get this inspired casting. Any ideas on who he will play?

Blaine's new love interest? I haven't seen the show for a long time so I don't know what is going on but I know Blaine and Kurt are not together any more... I hope they find their true love and have a fabulous gay wedding on the show.

Adam Lambert Will Sing Lady Gaga's 'Applause' On Upcoming 'Glee' Episode

You Glamberts better put your hands up, and make 'em touch because the "American Idol" alum is coming to "Glee" and he's ready to blast some Lady Gaga on the McKinley High students.

That's right everyone, gay worlds are colliding as Adam Lambert is set to guest star on the fourth episode of the upcoming season of "Glee" and will perform Gaga's latest single, "Applause."

While there were rumblings online that Lambert would guest star as a drag queen and sing Gaga's "Judas," it looks like changes have been made (reportedly per Lambert's request) and he will no longer appear in drag.

Lambert's episode will be the fourth in the season and will also be the installment following Cory Monteith's memorial episode, which will address the death of the actor, and by extension his character, Finn.

Aside from prepping for his guest turn on "Glee," Lambert has also been keeping busy this summer by recording a track for Avicii's debut album, splitting from his record label and sitting at the center of rumors he would return to "American Idol," but this time as a judge.

Lambert's version of "Applause" should be a memorable cover if nothing else and if you have any doubt that he can pull off Gaga then check out his fierce wig wearing: