Justin Bieber Flashes His Bare Butt — Oops

Normally it’s just his underwear, but Justin Bieber gave us a full shot of his bum at the Heathrow Airport April 23.

Justin Bieber just gave us a big eyeful of something he probably reserves for the privacy of his own room!

The 18-year-old pop star was in the Heathrow Airport in London yesterday, bent over and gave photographers the money shot — of his butt!

Do you think Justin did it on purpose, or were his pants just a little too loose?

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