Justin Bieber Sings 'The Hangover' Song in New Instagram Video

Check out Justin Bieber singing “What Do Tigers Dream Of?” in a newly released video posted on his Instagram!

“What do Tigers dream of?/When they take a little tiger snooze,” the 19-year-old sang from the song that was made famous in Bradley Cooper‘s hit film The Hangover.

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Shortly before Justin posted the video, a separate video of him sleeping in a hotel room with a mystery girl in the room surfaced online.

WHAT DO YOU THINK of Justin Bieber singing “What Do Tigers Dream Of”?