When Justin Bieber greeted Canadian Prime Minister Stephen Harper while wearing overalls Friday, his choice of informal attire didn't go unnoticed. While Gawker proclaimed him a "white trash prince," the 18-year-old pop star took to Instagram to defend what some considered a sartorial faux pas.

Bieber posted a screen shot of a Daily Mail article concerning his "wardrobe fail" and explained to the writer that the photos were taken at a hockey arena where he was performing that day, and he simply didn't have time to change his outfit before meeting with Harper.

Of course, Bieber isn't the only celebrity to step out in overalls. Heidi Klum, Katie Holmes and plenty of other stars have made the playful fashion statement.

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  • Justin Bieber, 2012

  • Heidi Klum, 2012

  • Katie Holmes, 2010

    Bauer-Griffin

  • David Hasselhoff, 2012

  • Fergie, 2005

  • Jennifer Aniston, 2008

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  • Fergie, 2005

  • Regis Philbin, 2010

  • Liv Tyler, 2011

    Hector Vallenilla, PacificCoastNews.com

  • Nicole Richie, 2006

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  • Jack Black 2010

  • Kim Kardashian, 2008

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  • Zoe Saldana, 2008

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  • Cameron Diaz, 2007

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  • Alexa Chung, 2011

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  • Nicole Richie, 2009

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  • Anna Faris, 2011

  • Katy Perry, 2008

  • Miley Cyrus, 2008

  • Sarah Jessica Parker, 1988

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