Watch! The Cast of ‘Glee’ Performs on ‘X Factor’!

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This past weekend, the gleeks of McKinley high left Ohio and trekked all the way to Britain to perform on the British version of American Idol, X-Factor! Lea Michele, Cory Monteith and the rest of the Glee cast performed their classic, “Don’t Stop Believin'” in the same sparkly outfits that they wore to sectionals on season one. How cute!

Kurt was a no-show, since, as Chris Colfer tweeted, he “had to stay and film scenes with the Warblers,” but it looks like Sam (Chord Overstreet) was there as his replacement and we are so not complaining.

Click on to see tons more pics and the vid of the gleeks’ performance — and watch as Mercedes (Amber Riley) gets all up in Simon Cowell‘s face!