With Miranda Cosgrove going on to pursue a higher education and Jennette McCurdy transitioning into a starring role on her own spin-off show, "Sam & Cat," the end of Nickelodeon favorite "iCarly" has officially arrived. The show's hour-long finale special, "iGoodbye," will air on Friday, November 23.
In honor of the show's series finale this Friday, we got to thinking about some of our all-time favorite "iCarly" guest appearances. As Jennette McCurdy once said of Jane Lynch's guest appearance as Sam's mother, "The guest stars... bump up the cool of 'iCarly' drastically." And we couldn't agree more. Click through the slideshow below for five of the most awesome "iCarly" cameos, from the FLOTUS to the boys of One Direction.
Will you miss "iCarly" now that it's ending? What was your favorite guest appearance? Tell us in the comments below or tweet @HuffPostTeen!