Justin Bieber battles through illness for show, throws up on stage

(CNN) -- Justin Bieber proved the show must go on while performing in Glendale, Arizona, on Saturday, September 29th.

During the first stop on his "Believe" tour, the pop star turned around in the middle of a song, hunched over, and threw up on stage, as seen in a video on TMZ.

Bieber was apparently a good sport about getting sick, saying, "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?" according to Us Weekly.

With the audience's support, Bieber continued performing, and reportedly dedicated the song "One Less Lonely Girl" to Avalanna Routh, the 6-year-old fan who recently lost her fight against cancer.

Later that night, Bieber tweeted, "Great show. Getting better for tomorrow's show !!!! Love u ... And .... Milk was a bad choice! Lol."