Sneak Peek: Britney Spears' "Glee" Episode

NEW YORK (CBS) The "Glee" tribute episode to Britney Spears doesn't air until Tuesday, but loyal gleeks can get a sneak peek at what's to come.

A new clip shows guest star John Stamos, who plays dentist Dr. Carl, as he puts Cheerios/glee club members Brittany (Heather Morris) and Santana (Naya Rivera) under anesthesia. The two then launch into a rocking rendition of Britney and Madonna's "Me Against the Music," complete with costumes and sets that look straight out of the original music video.

There's no sign of Spears in this clip, but she is set to make an appearance in the episode - the pop icon even tweeted pictures from her time on the "Glee" set last month.

Are you excited for the "Britney/Brittany" episode? Watch the video below.