Watch the below vids see the footage that made your fave teen stars famous! (Note: We threw in the slightly-older Ian Somerhalder on the last slide for fun. You’re welcome.)
We can’t get over how tiny Selena and Miley are — and how awesome Demi’s audition was for Sonny! Which of them impressed you most? Any other celeb auditions tapes you’re dying to see? Sound off below or tweet us@huffposthigh!
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