Britney Spears, Christina Aguilera, Beyoncé, and Alanis Morissette have come a long way since “Star Search.”

Justin Bieber’s mom began uploading YouTube videos of her son singing in 2007, while Post Malone got his start on SoundCloud.

Katy Perry started off as a gospel singer.

Everyone’s gotta start somewhere.

From a young Justin Bieber singing his heart out on YouTube, to Britney Spears, Justin Timberlake, and Christina Aguilera honing their talents on “The Mickey Mouse Club,” the world’s most famous musicians were once just like everyone else in the business: trying to make it big.

We took a look back at 20 famous musicians at the dawn of their careers, and compared their humble beginnings to where they are now.

Keep scrolling to see your favorite artists before they climbed the charts.

It’s hard to believe that Mariah Carey was once unknown, but in the early 1990s, her career was just getting started.

She made her national television debut on “The Arsenio Hall Show” in 1991, shortly after releasing her first single, “Vision of Love.” Hall introduced her as a “very impressive young talent,” and Carey’s performance earned thunderous applause. She’s since won five Grammys and 32 Billboard Music Awards — and broken multiple chart records.
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