Oh Justin Bieber...
Poor old JB can't seem to pull off a gig without doing something embarrassing at the moment. At the beginning of the month he spewed up on stage during the opening night of his Believe tour, and now he's fallen down the stairs.
The Girlfriend star was performing Beautiful with Carly Rae Jepsen in Winnipeg, Canada last night, when he slid down the stairs on his behind.
We bet that's sore this morning.
Poor old Carly did her best to catch him and carry on singing, but we're guessing it took every ounce of self control she had not to LOL in Justin's face.