This may be hard to believe, but it’s officially been 10 years since the show Good Luck Charlie premiered. That’s right, the iconic show aired its first episode on April 4, 2010, and it’s seriously shocking how fast time has flown by! It feels like just yesterday viewers were watching Bridgit MendlerShane HarperSamantha Boscarino, Jason DolleyBradley Steven PerryMia Talerico, Eric Allan Kramer and Leigh-Allyn Baker 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 Tenzing Norgay Trainor, Calum Worthy, Matt Prokop, Rico Rodriguez, Ryan Newman, 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 Good Luck Charlie.

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