Justin Bieber fell ill not once but twice during the opening night of his Believe Tour Saturday.
TMZ obtained video of Bieber, 18, throwing up on stage while performing in the Jobing Arena in Glendale, Ariz.
He reportedly had to leave the stage not once, but twice during his 21-song set.
The first incident during the sold-out concert happened when the singer turned his back toward the audience during "Out of Town Girl," "hunching over, puking and then running for the side of the stage."
"It's hard for me, you know, not feeling great and throwing up in front of a bunch of people. Will you love me even though I'm throwing up on stage?" he asked the audience.
The Chicago Sun-Times then said a few seconds into "Beauty in the Beat, his duet with Nicki Minaj, Bieber left the stage again, this time stopping the show.
"I'm sorry, I'm going to slow things down," Bieber said when he reappeared to the usual barrage of ear-piercing screams. He took to a platform on a crane and soared above the audience, performing "Fall" on acoustic guitar and recalling his roots busking as a kid in Stratford, Ontario.
Bieber later blamed milk for his illness, tweeting "And... Milk was a bad choice! LOL"