Austin Butler, David Archuleta, and The Plain White T’s are all familiar names to you, we’re sure… but do you remember when they guest-starred on iCarly?! Oh, and that’s not all: There was Victoria Justice as BOTH Victorious’ Tori Vega and Shelby Marx, Jane Lynch as Sam’s mom, and even One Direction performing “What Makes
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Whether it’s Miranda Cosgrove’s growth from the original iCarly series as Carly Shay to the NEW iCarly, Victoria Justice’s transition from Zoey 101 to the lead in Victorious, or Ariana Grande’s breakout role as Cat Valentine that took her from Victorious to Sam & Cat – Nickelodeon stars have seen some amazing changes! Here are