This may be hard to believe, but it’s officially been seven years since the TV show Sam & Cat premiered. Yep, the hilarious Nickelodeon series aired its first episode on June 8, 2013, and it’s seriously shocking how fast time has flown by! It feels like just yesterday viewers were watching Jennette McCurdy and Ariana Grande on their TV screens, and there’s not a day that goes by that fans don’t miss it, TBH.

Fans may not know this, but there were actually a ton of celebrity guest stars throughout the four seasons that the show aired. Yep, stars like Nathan Kress, Jerry Trainor, Emily Skinner, Liz Gillies, Noah Munck, Matt Bennett, Kel Mitchell and more made appearances on the show long before they were famous! Wow, who knew?

They’re not the only ones… Scroll through our gallery to uncover all the stars you totally forgot guest starred in Sam & Cat.

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